2022 Gmc Sierra 1500 Engine Problems

Your engine suddenly seized while you were driving, causing your vehicle to coast to the shoulder. No warning lights appeared before the failure occurred. The dealer determined your engine had failed completely and needed to be replaced.

Your engine has suffered internal damage—a bearing on the crankshaft has failed, requiring a complete engine replacement at 73,000 miles despite regular oil changes and maintenance. The problem started with hard starting and engine knocking sounds before you got it to the dealership for diagnosis. The fix will involve replacing the entire engine.

While driving on the interstate at highway speed, your engine suddenly lost power and multiple warning lights appeared on the dashboard, including a low oil pressure alarm. The engine has now failed and requires replacement. This issue may be related to oil pressure or internal engine problems.

Your engine suddenly lost all power without warning while driving on a highway, and the truck wouldn't restart or shift into neutral, leaving you stranded in traffic. The engine appears to have an internal failure possibly involving the crankshaft or connecting rods, which matches a known recall issue for your vehicle. The dealer is still investigating the exact cause. Repairs will likely require engine inspection and possibly internal engine component replacement or a complete engine rebuild.

While driving at 72 mph, your engine started knocking and ticking, then the transmission shifted into neutral and asked you to restart. When you coasted to a stop, it shifted into park by itself and the engine became completely locked up and wouldn't start again. This is your second engine failure—the first replacement happened at 13,000 miles, and now at 54,000 miles you need another complete engine replacement, even though a recall inspection found no issues in December 2025.

Your engine made a loud metallic clanking noise (described as "ching ching ching") and then shut off completely. After this happened, your truck would not start again.

Your truck suddenly lost all engine power while driving in heavy Memphis traffic with your daughter in the car, forcing you to safely navigate to the shoulder of the interstate. The dashboard displayed a "please start truck" message, but the engine wouldn't restart. After being towed to a dealer, GM replaced the engine with a remanufactured unit, but the new engine is now making similar noises to the original failed engine. The repair may involve another complete engine replacement or diagnostic work to identify the source of the abnormal noises.

Your engine suddenly seized up and stopped while you were driving, causing your truck to lose power and pull off the road. This is a serious mechanical failure that requires immediate inspection to determine what caused the engine to lock up. You'll likely need professional engine diagnostics and possible engine rebuild or replacement.

Your 2022 GMC Sierra 1500's 6.2L engine has failed catastrophically for the second time, with only 6,300 miles on the replacement engine. The first engine was repaired under a GM field action but then failed a month later, requiring a complete engine replacement that took over 3 weeks. Your truck is now waiting for a second engine replacement, and you're concerned about the vehicle's resale value and the lack of compensation from GM for this recurring issue.

Your 2022 GMC Sierra 1500 with the 6.2L V8 engine is subject to a safety recall (N252494001) due to defects in the crankshaft and connecting rod bearings that could cause sudden engine failure while driving. You may notice engine knocking or check engine lights before a failure occurs. GM's remedy requires switching to 0W-40 synthetic oil for the life of the engine, but the dealership is charging an $85 surcharge per oil change for this required maintenance instead of providing it at no cost as federal law requires.

After your dealership completed GM's recommended 6.2 engine inspection and oil replacement as part of a recall, your engine seized about 5,000 miles later while you were accelerating to merge onto the highway. Your engine wouldn't crank, and you had to coast to the side of the road and have it towed. The dealership replaced your entire engine under warranty, but you're reporting that the manufacturer's recommended fix (oil type, filter, and cap change) didn't prevent the failure.

Your truck's 6.2L engine started running very rough with loss of power and unusual diesel-like sounds shortly after you started it following a 4-hour park. The dealer found that a stuck lifter on cylinder 3 had bent the pushrod, requiring replacement of all lifters on that side of the engine. This occurred after the engine had been serviced with thicker oil as part of a recall fix. The repair will involve replacing the valve lifters and pushrod to restore proper engine operation.

Your truck suddenly started sputtering and stalled while you were driving. When you tried to restart it, the engine wouldn't turn over. A mechanic discovered that both the fuel pump and fuel control module had failed, and both parts were replaced to restore operation. You've heard of similar issues with other 2022 GMC Sierra Elevation trucks and wanted to report it since no recall is currently in place.

Your vehicle is burning about 1 quart of oil every 1,000 miles, meaning you'll need to check and top off your oil regularly between oil changes. This excessive oil consumption suggests an internal engine problem that should be inspected by a mechanic. The fix may require engine diagnostics to identify the source, which could involve anything from replacing valve seals to more extensive internal engine work.

Your engine's coolant control valve failed, causing your truck to go into limp mode while driving on the freeway. This is a known defect affecting 2019-2023 trucks with the Duramax LM2/LZ0 engine, and GM has issued a special service warranty covering it up to 150,000 miles. Fixing this will involve replacing the coolant control valve.

Your engine suddenly seized while parked with no warning lights, and your truck won't restart. The dealer diagnosed a failed fuel system control module, which is part of an active recall, but the replacement part isn't available yet. Your truck remains at the dealer waiting for the part, and you're concerned the manufacturer is taking too long to provide it for repair.

I'm unable to provide a translation because the complaint document was not included in your message. Please share the actual complaint text or details about what engine or cooling issue you're experiencing, and I'll translate it into plain English for you.

engine recall 6.2 L-87 , after Pico scoop Test, which my truck passed, its using 2 plus quarts of oil per 1000 miles, the dealer has it and is saying they can find nothing wrong per the gm tech that is telling them to check this and that. Ok, oil is going somewhere, I want the motor replaced , they want to continue the oil consumption test, my thing is wasting my time to continue driving and bring back to it back for a low oil reading, Its not gonna fix its self by driving it. I understand gm wants to figure out why, but it should not be at customers time , replace the motor all ready, something is wrong. the first 1000 miles after a oil change and they put die in the oil to check for leaks. When They check the oil level friday 02/06/26 the oil did not read on the dip stick.

54k miles. Crankshaft failure. Truck shut off and put in neutral while driving with no codes on dash. Got a text saying to service engine and transmission immediately. On a side note, it is bullshit that you can't put the truck in neutral to get it off the road. The dealership is also doing a great job covering it and offering a loaner.

I purchased my vehicle in June 2025. In January of 2026 the vehicle would sometimes shut down at red lights, requiring me to restart. No engine codes would pop up. On Jan. 16th, 2026, I exited my vehicle and heard a “cow bell clunking” coming from the engine area. I scheduled a service, and I was informed that the issue was part of the GM recall for 6.2L engines. This concerned me, because my vehicle had already had the “remedy” for the recall (changing engine oil type) prior to me purchasing it Certified Pre-Owned, and the engine still failed. The dealer I brought the truck to did a full engine (and appropriate parts) replacement as part of the open recall.

after i had the car inspected per thier recall on potential engines issues, the car passed and was told no issues. 6 months later driving on highway with family during rush hour and suffered complete engine failure going 70 mph. Lucky not to have been hit from behind. scary to be on highway like that. It was freezing outside. Dont understand being told car is fine and then this happens.

On November 16, while driving on the highway, my GMC vehicle suddenly lost engine power without warning. I was forced to stop in traffic, creating a dangerous situation and putting my life at risk. The vehicle required towing and has remained at the dealership since that date. The dealership determined that the engine requires replacement. Repairs have been significantly delayed, including an incorrectly ordered replacement engine, and the vehicle remains out of service more than two months later. This defect caused a sudden loss of power while driving and presents a serious safety concern.After the incident, I contacted the dealership immediately. Diagnostic appointments were scheduled and then canceled by the dealership twice, which delayed inspection and repair. I was only able to leave the vehicle at the dealership on December 12 due to these delays.

My vehicle stop running as I approached a traffic signal and failed to restart, it happened at a heavy traffic intersection during morning commute,I had the vehicle towed to Dealership that same day (01-22-2026). Later that evening the dealership called to inform me that the motor was blown and had ordered a new one.the mileage is approximately 39,285.

Complete engine failure, at 57,000 miles, was driving approximately 75 mph on the I-15 in Utah outside of St. George, and the left lane, engine turned off, was able to pull safely in a shoulder in a canyon with my family, my wife, my kids [XXX] and [XXX] old. Vehicle was towed that evening at 7 PM to the dealership, where it was diagnosed with completed engine failure. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Radiator is leaking where plastic meets metal. Leaking coolant at upper corner driver side. This is crazy for a 70k truck. It is a known problem. Dealer refused to submit a claim to GM. I am seeing people get theses replaced. It has been an issue since coolant control Valve was replaced.

The contact owns a 2022 GMC Sierra 1500. The contact stated that while driving approximately 65 MPH, the check engine and several other warning lights were illuminated. The contact stated that the vehicle almost stalled and then lunged forward. The vehicle was driven back to the residence, and a local dealer was contacted. The contact had taken the vehicle to a local dealer, where it was not yet diagnosed or repaired. The contact stated that the vehicle was repaired under NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling) by the same dealer. The contact stated that the dealer had tested the engine and added thicker viscosity oil. The contact related the failure to the recall work. The manufacturer was not informed of the failure. The failure mileage was approximately 25,000.

There was engine failure whereby the pushrods were ticking extremely hard. After towing the vehicle to the repair shop, it was determined that a new engine would be needed. The cost for repair was $11,500.00 dollars. The original engine has approximately 75,000 miles.

My 2022 GMC Sierra Denali Limited (6.2L L87) had an engine recall performed by an authorized GMC dealer (Paul Masse Buick GMC) in November 2025. Prior to the recall service, the vehicle had no check-engine lights, no drivability issues, and no knock-related symptoms. Immediately after picking up the vehicle from the recall service, the check-engine light illuminated within seconds of leaving the dealership parking lot. I returned the vehicle immediately. The dealer diagnosed a failed knock sensor and replaced it at my expense. There were no prior warning signs or symptoms before the recall visit. General Motors declined responsibility, classifying the issue as an out-of-warranty repair and confirming only that the recall procedure was followed. GM did not evaluate whether dealer handling, component disturbance, or recall-related activity contributed to the immediate failure. I am submitting this complaint because the failure occurred directly after recall service, suggesting a possible recall-adjacent issue or unintended consequence of recall procedures, and because GM declined to investigate causation beyond procedural compliance.

The CAM Sensor Failed and the reluctor ring was chipped. They could not determine without spending hours taking a part the engine if it was a piece of metal from the current recall that chipped off and broke the reluctor ring. No problems until immediate failure and had to had the car towed to the shop to identify issue.

Purchased vehicle in July 2025. Started having the engine failure issues described in recall "L87 Engine Loss of Propulsion (Related field action: See Special Coverage N252494003)". GM says that the recall work was completed in May of 2025, however, the same exact issue as described in the recall exists. Engine fails during vehicle operation, the vehicle will lose propulsion, increasing the risk of a crash. We believe the recall fix was not performed properly as vehicle has same issue. Dealership has not helped us and GM referred us to you.

The engine in my vehicle has failed twice while driving at highway speed. Both times, the engine suddenly stalled without warning, causing an immediate loss of propulsion, lighting, and steering assist. Each failure occurred at night, and I had to coast to the shoulder in the dark with limited control while other vehicles traveled at high speed. During the second incident, two children were in the vehicle. Both events created a serious risk of a collision or injury. The failure involves the primary propulsion system. After the first incident, the dealer replaced the engine and performed recall-related updates. Months later, the replacement engine failed in the same way. The dealer inspected the vehicle after each incident, confirmed the failures, and is replacing the engine again. The issue has therefore been reproduced and verified by the service center. There were no warning lights, messages, noises, or drivability symptoms before either failure. The engine stalled suddenly both times. A separate exterior trim piece, previously repaired under a recall, also detached while driving, adding an additional hazard. Both engine failures and the sudden loss of lighting and power created a clear and immediate safety risk to occupants and surrounding traffic. The repeated nature of the defect after a full engine replacement raises concern that the underlying issue has not been resolved.

The contact owns a 2022 GMC Sierra 1500. The contact stated that while operating the vehicle, the check engine warning light illuminated. The vehicle was taken to the local O'Reilly's, who diagnosed that the cylinder #2 glow plug had failed and needed to be replaced. The vehicle was not yet repaired. The manufacturer and local dealer were notified of the failure and informed the contact that the VIN was not included in the Manufacturer's Special Coverage that was related to the failure. The contact stated that the special coverage service was for the previous model years with a 3.0-liter turbo diesel engine that had experienced the same failure. The failure mileage was 38,773.

My GMC dealer falsely reported that recall work was completed on my engine but it was proven by an independent service center that it was not done. Items that have been proven to have not happened were 1. Replace engine oil with higher viscosity oil, 2. Replace oil filter to match new oil, 3. New oil fill cap labeled with oil type, 4. New insert for owner's manual. The way I initially learned the work was not completed was by warnings on my dash about low oil pressure and low oil level in my engine this past weekend. The independent service center provided confirmation that the invoice from my GMC dealer was falsified and that the work they stated was completed was not done. As a result of the failure to complete the work, my engine ran on insufficient oil and, based on the dirtiness of the oil in my engine, it compromised its condition.

Took truck in for recall on sept. 19th, it passed and oil was changed per recall. On Nov 1, driving on IH 20. engine oil pressure went to 0 and engine stopped. The dash showed that oil pressure was low and to pull over vehicle. I was going 75 mph at time. Pulled to emergency lane and engine died. Had to tow to dealer. It was very unsafe due to speed and traffic on highway. At no other time was there any indication of engine problem.

The contact owns a 2022 GMC Sierra 1500. The contact stated that while driving at 60 MPH hauling a trailer going downhill, the engine seized. The vehicle was difficult to control. The message to “Shift to Neutral and Restart" was displayed. There were no warning lights illuminated. The driver attempted to restart the vehicle. The contact stated that the running boards were stuck outwards. The contact received notification of NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling). The vehicle was towed to the local dealer, where the engine was replaced after two months. The dealer informed the contact that the battery was completely drained. The manufacturer was contacted, but no assistance was provided. The failure mileage was approximately 67,500.

The contact owns a 2022 GMC Sierra 1500. The contact received notification of NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling). The contact stated that there was an abnormal grinding and clinking sound coming from the vehicle. There were no warning lights illuminated. The contact called the local dealer and was informed that there was a waiting list for the recall repair. The vehicle was not diagnosed or repaired. The App had alerted the contact to the recall. The manufacturer was not notified of the issue. The failure mileage was approximately 41,216.

The contact owns a 2022 GMC Sierra 1500. The contact stated that while driving approximately 80 MPH, the vehicle suddenly lost power, the engine began knocking, and the vehicle began to decelerate quickly until there was complete engine failure. The contact was able to coast to the emergency lane on the side of the highway. After the failure, several unknown warning lights illuminated on the instrument panel. The vehicle was towed to the dealer, who diagnosed the vehicle with engine failure. The vehicle was included in NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling). The contact stated that the engine was replaced. However, with less than 3,000 miles on the new engine, the knocking sound reoccurred while starting the vehicle and while the vehicle was idling. No warning lights were illuminated. The vehicle was returned to the dealer, who diagnosed the vehicle with engine failure and determined that the engine needed to be repaired, but confirmed that an engine replacement was not covered under warranty or recall. The manufacturer was informed of the first failure; however, they were not informed of the latest failure. The failure mileage was approximately 117,457.

2022 GMC Sierra has a P1098 code. This code has to do with a faulty coolant control valve. This causes the engine fan to run constantly and displays on the screen "Reduced Acceleration, Drive with Caution". The truck does not have any power when this happens, which is 99% of the time. This makes using the truck very difficult in high traffic areas and pulling a loaded trailer. Apparently GM knows about this and is not getting the part to correct the problem to the dealerships in a timely manner. My truck was diagnosed with this problem over 2 weeks ago and still waiting on the part.

The contact owns a 2022 GMC Sierra 1500. The contact received notification of NHTSA Campaign Number: 25V274000 (ENGINE AND ENGINE COOLING). However, the part to do the recall repair was not yet available. The contact stated that while driving at an undisclosed speed, the vehicle failed to accelerate as intended while depressing the accelerator pedal. The contact was able to pull over to the side of the road. The contact turned off the vehicle, and the vehicle failed to restart. The vehicle was towed to the dealer; however, no cause for the failure was found. The vehicle was then towed to an independent mechanic who diagnosed that the engine and computer chips had failed. The vehicle was repaired. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the issue. The failure mileage was 56,313.

See attached document for complaint.

See attached document for complaint. I'm writing to formally express my concern and disappointment regarding the excessive delay in resolving the recall issued for my vehicle. While I understand that safety recalls can involve complex logistics, the prolonged timeframe without any clear resolution has created both an inconvenience and a safety risk for me and other vehicle owners affected by the same issue.

My motor locked up a year ago. Before the recall. At 74k miles. GM stated they did not know why it happened. Although there was 6 of the same trucks in their lot under 20k miles with the same problem. I was forced to pay out of pocket. I notified my GM dealer that my engine was knocking at 15k miles and they did nothing. Now that I have a new engine I have brought it to the dealer 3 times because it is also knocking. They’ve told me they hear it but theirs no code so nothing wrong with it….. GM refused to help me in any way nor will they help me get a reimbursement for their manufacture defective engine that I payed for. I had to take a $10k loan out to get back on the road. Every day that passes I am paying more interest because of GM. They will not even let my bring it in for an inspection and the heavier weight oil (they want me to pay diagnostic fee HA) I don’t want to take legal action but it feels like if I don’t, GM is going to ruin my life. Such a Blatant disregard for the customer. This whole thing has put me in such a terrible financial crisis I’ve been living check to check since this happened. PLEASE HELP ME.

See attached document for complaint. Text from attached document: Unacceptable delays in repair: We have contacted 2 local dealerships, both of which have informed us that the necessary parts are unavaila ble and cannot provide a clear time line for when repairs will be completed. Leesburg Buick GMC Hummer (Country Buick GMC at time of vehicle purchase) Joyce Koons Buick GMC (Service Manager: Michael Nguyen) • Poor communication from GM: We have received no follow-up communication from GM regarding the status of the recall or expected resolution. We have contacted GM twice by phone using the number provided in the recall notice. During the first call, we were transferred to a dealer in Arizona- despite resid ing in Virginia. On our second call, on 8/2, we were informed that our case had been escalated and that we would be contacted within 24-48 hours. As of now, we have not received any return phone call. • Ongoing safety concerns: We are unable to drive the vehicle due to the risk of engine failure, which compromises our safety and that of others on the road.

I was notified by GMC of recall N25249000 by letter in May 2025. Shortly after I scheduled an appointment with my GM dealer to get the recall repaired but the dealer told me that GM has not told them how to repair the issue. The GM dealer told me they would let me know when GM tells the dealer how to repair the issue, so I could bring the vehicle back to repair the recall. I just received another notice from GMC about the recall today (08/11/2025). It has been roughly 4 months of waiting to get this recall fixed on my vehicle.

I received a recall notice in May 2025 for L87 Engine. To date, remedy not available. Per the safety recall letter provided, I'm notifying you that the dealer has failed "within a reasonable amount of time" to remedy this situation.

The vehicle’s shift control module in the transmission is malfunctioning. The vehicle is shifting hard and having trouble finding the gears. The safety issue is that this is a known GMC transmission malfunction with the risk that the rear wheels can lock up when downshifting in the higher gears. Sudden rear wheels lock up proses a risk to cause an accident on the roadway potentially harming the driver and passengers in the defective vehicle as well as risking other drivers on the road. No warnings were given before the malfunction. The vehicle has been regularly serviced on time and taken care of. The malfunction began and within one week the vehicle progressed to shifting so hard I didn’t feel comfortable driving it especially with my child in tow.

The contact owns a 2022 GMC Sierra 1500. The contact stated that while driving at an undisclosed speed, the check engine warning light was illuminated, and the vehicle suddenly stalled. The vehicle was able to restart, but the check engine warning light remained illuminated. The vehicle was taken to the local dealer, where it was diagnosed with an engine oil consumption failure. The vehicle was not repaired. The contact was informed that the failure was related to NHTSA Campaign Number: 25V274000( Engine and Engine Cooling). The manufacturer was notified of the failure, but no assistance was offered. The failure mileage was 87,500.

The contact owns a 2022 GMC Sierra 1500. The contact stated the vehicle was consuming an excessive amount of engine oil. The contact stated that engine oil needed to be added after each oil change. The contact stated that recently, the low oil warning illuminated. The contact had taken the vehicle to a local dealer, who was unable to diagnose the vehicle. The vehicle was not repaired. The contact recently received notification of NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling). The contact related the excessive oil consumption to the recall. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was informed of the failure. The failure mileage was approximately 47,000.

The contact owns a 2022 GMC Sierra 1500. The contact stated while driving 60 MPH, the vehicle stalled. The message "hot oil" was displayed on the screen. The contact was able to coast to the side of the road where the vehicle failed to restart. The vehicle was towed to the dealer where it was diagnosed that the engine had failed and needed to be replaced. The vehicle was repaired. The contact later received notification of NHTSA Campaign Number: 25V274000 (ENGINE AND ENGINE COOLING). The contact stated that on a separate occasion, while the vehicle was idling, the vehicle vibrate abnormally. In addition, the transmission unexpectedly downshifted. The message to be careful when passing, and the message to use both hands while driving were displayed. The contact stated that most recently an alarm was coming from the vehicle. The vehicle was taken to the dealer where it was diagnosed that a fan had failed and needed to be replaced. The contact was unsure if the vehicle was repaired. The failure was a recurring failure. The contact was concerned about the safety of the vehicle while driving. The manufacturer was not informed of the failure. The failure mileage was approximately 37,000.

Pulling away from a stop sign when we were driving, and when I started to excelerate the truck it just died. We were at a busy intersection and was able to pull off the road into a parking lot and had AAA come and tow the truck and took it to Poages Auto Plaza, Quincy IL. This could have been really serious had we been on a busier road. We tried to restart the vehical and it would not start. We are going to need a loaner vehical preferrably a Truck.

The contact owns a 2022 GMC Sierra 1500. The contact received notification of NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling); however, the part to do the recall repair was not yet available. The local dealer and Classic Chevrolet Buick GMC of Cleburne (822 Walter P. Holliday, Cleburne, TX 76033); were contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the issue. The contact had not experienced a failure. VIN tool confirms parts not available.

The contact owns a 2022 GMC Sierra 1500. The contact received notification of NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling); however, the part to do the recall repair was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The dealer was made aware of the issue and confirmed that parts were not yet available. The manufacturer was made aware of the issue and confirmed that parts were not yet available. The contact had not experienced a failure. VIN tool confirms parts not available.

Year: 2022 Make: GMC Model: Sierra 1500 Denali 6.2L V8] - Location: Navajo Nation Reservation - [XXX] INCIDENT DESCRIPTION The engine completely seized while driving at highway speed, rendering the vehicle inoperable. Farmington GMC dealership confirmed total engine failure requiring complete replacement. All engine components available for inspection at dealership. I request preservation of all failed components for manufacturer/NHTSA inspection. Safety Risk This catastrophic failure created severe safety hazards: 1. Highway Emergency: Engine seized at approximately 65 mph, causing sudden power loss requiring emergency stop in remote area off [XXX]. 2. Remote Stranding: Breakdown in extremely remote Navajo reservation area with minimal cell service, no local emergency service available, leaving family of three small children, y wife and myself, stranded overnight in vehicle under harsh desert conditions and exposed to robbery or worse. Emotional and mental stress was very high. 3. System Failures: Complete engine failure caused loss of power steering, brakes, air conditioning, and charging systems during emergency stop. Dealer Confirmation YES - Confirmed by Farmington GMC Dealership (Farmington, NM): - Complete engine seizure diagnosis - Total engine failure requiring replacement - All diagnostic documentation available Official Inspections - GMC dealership technicians confirmed engine seizure - Requesting formal GM inspection of failed components - Insurance inspection: Pending to contact USAA - Request: Preserve all components for NHTSA analysis Warning Signs CRITICAL: NO warning signs prior to failure: - Comprehensive service 5 days before failure - all systems normal, fluids topped off Pre-trip service records show all systems within normal parameters Additional Information GMC issued recall for 2021-2024 Sierra engine defects (VINs/parts unavailable) Dealership confirmed relation to known manufacturing defects INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Due to GMC not having a fix for the safety recall to repair the potential engine failure, we are unsafe driving our car. This has been in effect since April and still no fix is available. We feel extremely unsafe driving this car due to this issue.

The incident occurred during a journey from Sacramento, CA, to Winchester, CA, a distance of approximately 486 miles in my 2022 GMC Sierra AT4, equipped with the recalled 6.2L V8 engine, which has accumulated around 61,000 miles. I was driving when a loud bang caught my attention over the music. After that, I heard swooshing sounds three times before the engine lost power. I was able to move over to the right shoulder throughout heavy traffic; I managed to make it safely. During the maneuvering of my truck to the shoulder, I noticed on the dashboard that the vehicle was telling me to shift the vehicle to neutral and start it. I shifted the vehicle to neutral, but it did not start. Upon inspecting the fuses and battery for any obvious issues, I proceeded to check the harmonic balancer for signs of engine seizing. The engine had completely locked up.

The contact owns a 2022 GMC Sierra 1500. The contact stated while driving 80 MPH, there were several abnormal loud sounds coming from the vehicle and the vehicle lost motive power. The vehicle was drifted over to the shoulder of the road. The message “Shift to Neutral and Restart Vehicle” was displayed. The vehicle failed to restart. The contact performed an inspection under the hood and determined that the engine had seized. The contact stated that the failure occurred while on travel. The vehicle was towed to the hotel. The following morning, the vehicle was towed to the dealer where it was diagnosed with engine failure. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. The contact stated that the vehicle had been at the dealer since April 28, 2025. The contact received notification of NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling); however, the part to do the recall repair was unavailable. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the failure and a case was filed. The contact was advised to contact the dealer for a status update. The failure mileage was 60,910. Parts distribution disconnect.

I am writing to formally lodge a complaint and request immediate resolution regarding my 2022 GMC Sierra 1500 equipped with the L87 6.2L V8 engine, which has been out of service for more than 30 consecutive days due to a recall-related defect. The vehicle is inoperable, and I have been informed by the authorized dealership that no loaner vehicle will be provided, with no clear estimate for when parts or repairs will be available. I have contacted both General Motors Customer Assistance and the local dealership to request a loaner vehicle. In both cases, I was informed that no loaner was available. I was advised that I could rent a vehicle at my own expense, and that GM would only consider reimbursement up to $44 per day, but only after the recall is completed and only if my case is deemed eligible upon review. This reimbursement policy—requiring me to first pay out-of-pocket without guarantee of repayment—has placed significant undue hardship, financial burden, and emotional stress on me and my family. This situation is especially frustrating considering the vehicle: Remains under GM’s lifetime powertrain warranty; Has been completely unusable for 59 days without replacement; Has left me with no reliable means of transportation, and Involves a known defect acknowledged by GM, yet with no definitive timeline for resolution. As a result, I am suffering direct and ongoing consequences, including: Out-of-pocket transportation costs; Disruption to daily life and mounting stress that no consumer should face after purchasing a premium, modern vehicle from a manufacturer of GM’s reputation. Accordingly, I am requesting the following: Provision of a comparable loaner vehicle immediately, or full reimbursement for a rental vehicle retroactive to the date the truck became inoperable; Compensation for loss of transportation and impact on life. If GM cannot resolve the defect in a timely manner, a full repurchase or replacement of the vehicle under federal warranty law.

I was driving and entering the highway the truck lost power and acceleration was very slow, the engine fan runs 100% of the time, the check engine light comes on.

GMC has failed to offer a solution to this major engine defect. In talking to two dealerships they are unable to perform any tests at this time that would in fact identify the engine as defective. We hear a knocking lifter but GMC has not acted in a timely manner I called the GMC line (Reggie) and was told there is no remedy and no known information as to when a remedy will be available. I even told one dealership that GMC had backed out of changing the oil viscosity because it had made problems worse.

The contact owns a 2022 GMC Sierra 1500. The contact received notification of NHTSA Campaign Number: 25V274000 (ENGINE AND ENGINE COOLING); however, the part to do the recall repair was unavailable. The local dealer was contacted, and it was confirmed that the part to do the recall repair was not available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact stated while driving approximately 60 MPH, the vehicle started to lose automotive power and independently decelerated. Additionally, there was a knocking sound coming from the engine. After stopping the vehicle, the vehicle stalled, and failed to restart. The vehicle was later towed to the local dealer. The cause of the failure was not yet determined. The manufacturer was notified of the failure. The failure mileage was 96,000. VIN tool confirms parts not available.

The contact owns a 2022 GMC Sierra 1500. The contact stated that the vehicle was experiencing excessive oil consumption. The vehicle was taken to the dealer, where oil consumption tests were performed, and the dealer informed the contact that the vehicle's oil consumption met the manufacturer's standards; however, the contact stated that there was no oil on the dipstick while the vehicle was receiving an oil change on the due date. The contact added 2 quarts of oil after driving 4,000 miles. The vehicle was not repaired. The manufacturer was notified of the failure, and a case was filed. The failure mileage was approximately 45,000. The VIN was not available.

The contact owns a 2022 GMC Sierra 1500. The contact received notification of NHTSA Campaign Number: 25V274000 (ENGINE AND ENGINE COOLING); however, the part to do the recall repair was not yet available. The local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure. VIN tool confirms parts not available.

Truck has failed coolant control valve. Unable to get replacement part. Truck is still under factory 3 yr 36,000 mile warranty. Truck has been in the shop but was not advised not to drive vehicle. Have had multiple instances where cooling fan is stuck on nigh and get reduced engine power message limiting power while driving. Also took truck in for recall that is currently on it and dealership failed to address recall it was scheduled for.

The contact owns a 2022 GMC Sierra 1500. The contact stated that while driving at an undisclosed speed, there was an abnormally loud sound coming from the engine compartment. There was no warning light illuminated. The contact attempted to restart the vehicle; however, the vehicle lost motive power. The contact received notification of NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling); however, the part to do the recall repair was unavailable. The vehicle was towed to the dealer but was not diagnosed or repaired. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the failure. The approximate failure mileage was 96,533. VIN tool confirms parts not available.

My engine developed a tapping sound about 10,000 miles into owning it. Wasn’t throwing any codes and it wasn’t extremely noticeable. I have been a mechanic for 20 years and knew something was wrong. Brought it to the dealership. They refused to investigate further due to no codes being on the computer fast-forward to 74000 miles on the vehicle. The engine locks up and leaves me stranded six hours away from home. Yes, the oil was changed religiously throughout the engine’s life, and all service was done through the dealership. I went back and forth with GM for weeks and they still refused to replace the engine on their dime. I was forced to come out of pocket 13000 dollars to replace the engine. Due to the warranty being out by 14000 miles. GM COULDN’T EVEN TELL ME WHY IT EXPLODED AND COULD NOT ASSURE ME THAT THE SAME ISSUE WOULD NOT HAPPEN TO MY REPLACEMENT ENGINE. 2nd engine started to DO THE SAME THING AFTER 8000 MILES AND THE SAME THING HAPPENED AT THE DEALERSHIP. THEY REFUSE TO DO ANYTHING BECAUSE THERE WAS NO CODES. NOW I HAVE 30,000 MILES ON THE SECOND ENGINE AND I KNOW WITHIN THE NEXT FEW MONTHS IT’S GOING TO DO THE SAME EXACT THING BY THE WAY IT’S RUNNING. I’m disgusted. GM has personally put me in excessive financial strain and caused me serious anxiety. And now I’m driving around a ticking time bomb with no resolution.

Engine locked up without warning while traveling 65 MPH heading [XXX] on [XXX] outside of East Dubuque, IL. I had now power and many lights on the dash lit up simultaneously. Luckily I was able to coast to a stop and get my vehicle mostly off the highway. I had to walk almost 3 miles in the snow and dark to get to town. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

I was driving down the highway at 75 MPH; and noticed my traction control light come on. No sooner than the thought processed about the light my whole dash lit up and indicated engine light, Traction control system, and steering was difficult. I pulled over immediately and turned the vehicle off. I got out checked all the fluids “all were full and good” no leaks, cracks, nothing obvious I could see. I got back in and started the engine for a moment and heard a slight knocking on the passenger side of engine and felt a little vibration not present before. After getting it towed and not wanting to risk further damage I got the vehicle to a GMC dealer who then diagnosed that I had a failed lifter on my vehicle. This caused bent rods, leading to internal engine damage and I needed a completely new engine. The odometer reading was 68,231. I have not even had a headlight go out in this vehicle yet. All of my oil change records were up to date. It was past my warranty with GMC so they would not pay for it and wanted me to pay 10,700$ out of pocket. My insurance ended up paying for it. When I inspected the engine myself with a GM mechanic he told me that they have been having ALOT of issues with these lifters being stuck causing catastrophic engine damage. Obviously the 6.2 liter is noticed but my vehicle is a 5.3 liter V8. They believe it is caused by the AFM fuel saving feature where it goes down to 4 cylinders on highway speeds to save gas. This was a nightmare and I was without a vehicle for ALMOST a month to the day… exactly 29 days

We didn't know that the truck was having a low pressure oil problem, never showed a warning or check engine light, the truck stop all off the sudden without warning, and the engine was seized in the middle of a road,thank God we weren't driving in the highway .

The contact owns a 2022 GMC Sierra 1500. The contact stated that while driving at an undisclosed speed, the contact became aware of an abnormal roaring sound coming from under the hood. The contact stated that the abnormal roaring sound was persistent and became louder over time. The vehicle was not diagnosed or repaired by an independent mechanic or the dealer. The dealer was made aware of the failure. The contact received notification of NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling); however, the part to do the recall repair was unavailable. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the failure. The failure mileage was 12,000. VIN tool confirms parts not available.

The check engine light came on and the fan ran at full speed. The engine light is for a faulty coolant control valve which I've been told is a known issue and is on national backorder.

Major engine failure with substantial loss of power while towing 24ft camp trailer. New engine has been installed. I was told by dealership that it was failure of engine bearings and connecting rods. They had seen a few similar cases

On December 12th heading to Bozeman at 88 MPH on I-90, truck completely died at high speed. We were going to have it towed to Billion in Bozeman because this was the cheapest route. We then got notice from your dealership that we had to tow it to Billings because Billings dealership never transferred the paperwork from Canada. $825.00 later we dropped the car per towing at Billings dealership. Monday, went to dealership and there was no word as to when his truck could get fixed. I was told by GMC that we would be reimbursed for the towing expense and since you did not have a loaner vehicle the 2 options GMC provided were to rent or car, reimbursed or GMC would cover our loan payment until the truck was fixed. Every week called dealership for an update and there was no update. I ended up calling Menholt-Chevy because I wanted to know what the average wait time was for this sort of problem. He said they had engines but it would be the same engine installed and if the warranty was through GMC, GMC would have to do the work. We were hesitant to even drive with this same engine again and possibly having the same situation happen again. Menholt suggested we trade the vehicle. They came up with a trade deal through his dealership on February 10th. February 12th AJ with Menholt had the vehicle towed to their dealership, exactly 2 months later. Ali, from GMC emailed April 2 stating they can no longer re-imburse us because we did not accept any incentives that were offered through GMC and that they tried to work with us and we did not accept any of their offers. XXXX and I were never offered anything, Period. We asked dealership for proof of offers and they could not provide any. I have never been re-imbursed and have been ignored from that point forward. The dealership has misinformed GMC and GMC and the dealership misled us. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

They’ve failed to remedy my situation. I called in twice and they told me there is nothing they can do yet even though I’ve noticed my engine lost power temporarily. Manufacturer Recall Number N252494000 NHTSA Recall Number 25V274

Truck was traveling through Atlanta when engine shut off and was not responsive. Was able to get truck off the interstate (I285 ramp to I75). Truck would not turn over. Pushed the ONstar button, they stated they couldn't diagnose the truck. They called a wrecker and got truck to a local GMC dealer(Capitol GMC). Truck was approx. 90 mile away from home. Dealer called on Monday 4/21 and stated that the engine was locked up and would need a new engine.

Coolant Control Valve malfunction causing fan to go on high. After several starts, engine light goes away but comes back sporadically. Safety issue is that when the light comes on it reduces the engine acceleration mid-drive. Coolant temp is normal but control valve is causing fan to turn on and reducing the engine acceleration.

The engine on my 22 Sierra began knocking at 23,000 miles . The engine i have is a 6.2. It was already scheduled for a front grill recall at the dealer and I had concerns for the knocking issues. I had no lights on the dash or a performance issue at the time. The dealer said they heard the knocking and wanted to take the oil filter off to confirm engine failure. The found metal shavings in the filter and it needed a new engine. They said if I kept driving it the engine would have locked up . Luckily I cought it in time and avoided an accident on the highway. This is a huge safety issue.

I had taken my vehicle to the dealership for a front grill assembly recall by the end of the day they called me and said I needed to leave my truck at the dealership because of a coolant control valve and they don't recommend me driving it. They told me they would get me a rental car but we're not able to get me one until 11 days after my vehicle was in the shop. I told them I needed a truck for work but was told they could only offer up to 44 dollars a day and I'd have to take a vehicle that was given to me or pay out of my own pocket to rent my own. I had the case escalated but have yet to hear anything back from GMC if they have even recieved the part or what is going on with this backorder part! From what I've been seeing and reading this is obviously an ongoing thing with GMC they have known about this coolant control valve for years now but instead of producing them so they are no longer on backorder they continue to produce plenty of new vehicles to throw on the sales lot. I am out of thousands of dollars because I don't have a truck and only 2 weeks into this mess with GMC. The vehicle is paid off and I continue to wander when a part or gmc will give me a better option. So I can continue with my business.

While I was driving on highway, engine shut down and wouldn't restart. I needed to be towed.

Main bearing failure while driving. Had to replace the engine.

Was driving on the highway going 70 mph truck suddenly shut off, was stranded on side of the road heavy traffic.Towed truck to dealership and engine was confirmed seized. No warnings messages or symptoms prior.

The contact owns a 2022 GMC Sierra 1500. The contact stated while driving 45 MPH, the vehicle lost power. The engine failure warning light was illuminated. The contact pulled over to the side of the road and stopped the vehicle. The contact turned the vehicle off, exited the vehicle, and added oil to the engine. The vehicle was towed to dealer, where it was diagnosed and determined that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure but offered no assistance. The approximate failure mileage was 62,000.

I was driving at 60MPH on the highway and my engine failed. The dashboard read "Press Start to Restart" and my engine RPMs were zero and nothing happened when I pressed the accelerator. I was lucky to be driving in the right hand lane and was able to get over. I had to stop the vehicle in a tight area with a guardrail on the right hand side of the shoulder and passing traffic on the left. Luckily, my engine restarted. I got off at the next exit and the same thing happened. I was able to restart is again and get it home and eventually to the dealer. The vehicle has 29,500 miles on it and the dealer says it needs a new engine (L87). They say it could take 3 months to get it.

The contact owns a 2022 GMC Sierra 1500. The contact stated that while driving 40 MPH, the vehicle failed to respond as needed. There were no warning lights illuminated; however, the message to shift to neutral and press the start button was displayed. The contact parked and turned off the vehicle; however, the vehicle failed to restart. The vehicle was then pushed by another vehicle to a dealer, where it was diagnosed and determined that the engine had seized. The vehicle was not repaired. The manufacturer was made aware of the failure and offered to pay a portion of the cost of the repair. The failure mileage was approximately 82,346.

The motor blew up Safety I was going approximately 70 mph on interstate 80 could have been bad The vehicle is at a Chevy dealer The dealership has looked at it but has no idea when a new motor will arrive About a week before the ck oil light came on maybe a month prior to that when sitting at a stoplight, the motor started to shake

Engine failure requiring engine replacement. I was told it was likely a bearing failure issue. I purchased the vehicle used from grapevine Buick with about 75,000 miles and decided not to purchase an extended warranty because I have always had good life and no engine issue with my previous chevy vehicles. There were no warning engine lights before, when it occurred or after it occurred. When the problem occurred on 12/2/24 I was driving on a road going approximately 50 mph when suddenly I felt a sudden loss of power. I then pulled over into a parking lot and could hear the engine knocking and making a screeching sound. I was over 230 miles from home when this occurred and had to get the vehicle towed back home. I had it towed again to an a shop where they determined the engine needed to be replaced. There was lots of metal shavings found in the oil pain. I was told it was likely a bearing failure issue. As I had no extended warranty and the factory warranty expired at 60,000 miles I had to pay over $12,000 for the engine to be replaced on a vehicle I had just purchased the prior month.

The engine went out while driving on the highway. Was driving around 60 mph. I almost gone to an accident. GM seemed like they knew of the problem but did not warn none of their customers of this problem. Car only had around 35,000 miles. GM however did swap out the engine. I want to sell and or trade it in, however the year and model lost its value due to the fact of the faulty engines.

At 61k miles motor siezed. Took 3 months to get a replacement this was 10/24 got truck back Jan 25, drove 3k miles and motor is knocking. Been at dealer since 2/2/2025. Waiting for replacement motor.

I heard a knocking noise in my engine on 4/13/25 and took it to a dealer to diagnose on 4/15/25. I had previously had to have the engine rebuilt due a collapsed lifter at 70,000 miles and I was concerned that the noise was a precursor to a repeat of that problem. Instead, the dealer informed me that problem was a failed connector rod bearing and would require a replacement engine. The service manager said my truck was not safe to drive since it could experience a sudden catastrophic failure on the highway. The truck has 80,000 miles and has been serviced at every single required interval by the original selling dealer. There was no check engine light warning.

repeated mechanical failures of my 2022 GMC Sierra AT4, which I purchased on October 26, 2024, with approximately 37,000 miles on the odometer. The adaptive cruse control is wonderful when it works but I have found even with the sensor clean the truck will slam on brakes on its own causing me to nearly be rear ended. It happens when driving into the sun and at night. I no longer trust adaptive cruse and use manual cruse. Within just 55 days of ownership, and after driving roughly 4,700 miles, the vehicle experienced a catastrophic engine failure without warning on December 20, 2024. This failure left the truck immobilized in a highly dangerous situation—stuck in the middle of a 65-mph highway at a red light, without the ability to shift into neutral and remove the vehicle from traffic. I was forced to activate the emergency flashers and exit the vehicle, standing helplessly on the side of the road while praying that oncoming drivers would see the truck in time to avoid a potentially deadly accident. The truck was towed to the dealership the following day, December 21, 2024, where it remained for an unacceptable 110 days awaiting a replacement engine. I finally took possession of the repaired vehicle on April 10, 2025. Shockingly, only two days later—after driving just 328 miles—the vehicle suffered a second catastrophic engine failure without warning. The truck is now inoperable once again, sitting in my driveway and in need of a third engine replacement. While the odometer currently reads 42,365 miles. This ongoing situation has been not only a major inconvenience, but also a significant safety concern and financial burden. I am extremely disappointed in the reliability and performance of this vehicle. This level of failure on a vehicle that is still under powertrain warranty is simply unacceptable.

While driving on a busy highway, the vehicle lost all acceleration. Seconds later, the entire truck shutdown. Lucky, I was able to get into the right hand lane prior to losing complete power, which allowed me to steer the truck onto the shoulder. It appears that an investigation has been launched into vehicles equipped with the GM 6.2L V8 L87 engine. This catastrophic engine failure not only put me in a fairly unsafe situation, it is costing me $13,800 to replace the engine on a 2022 GMC Sierra Denali.

The contact owns a 2022 GMC Sierra 1500. The contact stated that while driving at approximately 60 MPH, the RPM decreased while the accelerator pedal was depressed, and the vehicle lost motive power. No warning light was illuminated. The contact was able to pull over to the shoulder of the road. The vehicle was towed to the residence. The vehicle was then towed to a local independent mechanic, where it was diagnosed with a frozen crankshaft and engine seizure. The vehicle was towed to a local dealer, where it was diagnosed and determined that the engine had failed due to metal shavings inside the engine. The dealer determined that the engine needed to be replaced. No further information was available. The manufacturer was made aware of the failure. The failure mileage was approximately 64,900.

The contact owns a 2022 GMC Sierra 1500. The contact stated while driving 50 MPH, the engine seized. The contact was able to cost the vehicle to the side of the road. There were no warning lights illuminated. The vehicle failed to restart and was towed to the local dealer, where it was diagnosed and determined that the engine needed to be replaced. The dealer informed the contact that the parts were on backorder. The vehicle was not repaired. The manufacturer was contacted, but no assistance was provided. The failure mileage was 40,000.

Truck has 30,000 miles on it. Truck has been in dealer for a new torque converter which they did a fine job. Now it is in for engine problems. They said I need a ew engine and on backorder. This is the Sierra Denali Ultimate and did not expect this from such an expensive truck. I was given a loaner car.

The contact owns a 2022 GMC Sierra 1500. The contact stated that while company driver was driving the vehicle at an undisclosed speed, the driver noticed an abnormal knocking sound coming from the engine. The driver turned the vehicle off. The vehicle was restarted; however, the failure reoccurred. The vehicle was taken to the dealer where it was diagnosed with a lower engine knock. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. The contact was informed that the parts to repair the vehicle were on backorder. The contact stated the vehicle had been at the dealer since February 25, 2025, awaiting the repair. The manufacturer was not made aware of the failure. The failure mileage was approximately 64,000.

The contact owns a 2022 GMC Sierra 1500. The contact stated that while one of his employees was driving 45 MPH, there was an abnormal sound coming from the engine compartment. The check engine warning light illuminated, and the vehicle lost motive power. The vehicle was pulled over to the side road and turned off. The vehicle was towed to a dealer and the contact was informed that the lifters had caused the cam to become unglued, and the engine needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 75,000.

Premature Engine Failure, Motor seized up while driving

Premature Engine Failure, motor seized up while driving

On February 18,2025 I texted the imperial valley gmc technician because started hearing a motorcycle noise like and wanted to schedule oil change. Never responded. On February 22, 2025 while driving the the desert in the night we heard a loud noise, like when the tires get debri and the motor of the vehicle lost power. We pulled over as we could and the truck didn’t want to start. I called the dealer for an advise with no answer back. As I could I towed the truck to the dealer on March 6 and finally March 26 spoke to technician and the motor had to be replaced. Is on back order and it will take 3-4 weeks. I’m concerned because the truck didn’t gave any warning just left us on the road. I was really scared because it was deserted area and no traffic. Really unsafe in that truck.

On [XXX] I was driving East on [XXX] in Joplin , MO at 75mph when my 2022 GMC Sierra put itself into Neutral. I could not get the truck back into gear and I was slowly decelerating. There were no warning lights or indications of a problem. When I was coasting down the Interstate and trying to get the truck back into gear, I would get a message that said "Conditions not safe for shift" I took the nearest exit and coasted to a stop in the end of the exit ramp. Once I came to a complete stop, my truck shut off. It never started again after that. I was blocking traffic from [XXX] and had to stand there for 30 minutes waiting on a tow truck to move me out of the way so traffic could flow again. There was no way to get the truck into Neutral again so that I could push it. The tow driver thought I had a bad battery but wasn't able to jump start it. I had him drop my truck off at my office where I planned to install a brand new battery. A couple hours later, we determined that the battery was not the problem. Still no warnings or indications of a problem with the truck. I towed it to the nearest GMC dealer the following Monday. It has been there now for 5 weeks waiting on a new 6.2L motor that according to the service department, needs to be replaced. I was told this is happening a lot across the US right now, which is the reason for no estimated completion time on my truck. I understand there is currently no recall or lawsuit even though, from what I was told, this potentially affects 880,000 vehicles. I feel that the way in which my truck stopped was dangerous and inconvenient to me and those around me. I would like to know what GM is doing to try and get these vehicles back running again and how we know that the replacement won't have the same issue a few more years down the road when the warranty is long expired. Currently in a loaner car from the dealer but as this is a registered commercial vehicle, we really prefer the truck back. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Started my truck and the motor started knocking. Had it towed to the dealership and they said the motor was blown. Luckily I was in the parking lot at work when this happened. If the motor had blown while I was driving either to or from work on the interstate I could have wrecked. There were no warnings prior to the motor blowing up.

Engine failure in the 6.2L V8. Engine blew while traveling 60MPH on the highway causing all 4 wheels to lock and skid. No warning sign or sounds of trouble prior.

Was driving down the main highway in town when the truck suddenly shut off. No lights, no warning. Had the truck towed to the dealership and called my insurance company as I had recently had the fenders and hood repaired after having a fender bender in my front yard. The insurance company looked at the truck and inspected the motor and told me the motor had locked up. They said this was a common issue with the motor for my truck and they wrote a report about it. I emailed the CEO of GMC and requested help since my truck was just over the mileage that warranty would cover. Her assistant contacted me and agreed to check out the vehicle, investigate and determine a cause and see if they can supply assistance. After 6 months of investigating, they determined the crankshaft broke, but also told me the valves was a major contributor to that cause. They offered to discount the cost of a replacement motor. I declined, so they discounted it further. I declined again and they offered me one final offer of $7500 before tax for a motor and install. I had a quote from another local company for $6000 and told them no again. Her assistant said they could no further help me. I have the documents from my insurance when they investigated and I have the emails I sent but only 1 response from them. The rest of the communications was over the phone. It’s been a year and half and I still don’t have a running truck, but I have a 800 a month truck payment that I have to pay.

Driving as normal when loss of power occurred due to engine failure (rod issue) Investigation # (PE25001)

Driving down the road dash lit up to push start and truck shifted in to neutral. Pulled off the road and put in park. Engine would not start again. Dash kept lighting up with push start, turning off non essential to preserve battery. Called tow truck. They tried jumping, not the battery. Had to drag the vehicle on the flat bed because could not put in neutral. Drag and drop off the flat bed at the dealer. That was Friday. On Monday got the call the engine had seized. 34k miles Had just returned from a 2k mile trip with construction zones down to one lane and nowhere to pull off. Glad it didn’t happen there!

Stalled while driving 3 weeks ago, was able to restart. Last Monday it died again on a shorter trop to store, it wouldn't restart. 3 days later, after having to go to Dealership was told engine 6.2L engine is being replaced. Potentially crankshaft bearings failing at 55,315 miles on it

Truck was going into the shop for general maintenance when the engine stopped working just as we pulled into the dealership. The dealership towed the vehicle in to diagnose the issue and we were told the engine has blown. No warning, nothing. The vehicle went into the shop in December and still GMC cannot offer any lead time on when they can repair the engine.

Collapsed lifter or camshaft failure

The contact owns a 2022 GMC Sierra 1500. The contact stated while driving 70 MPH over a bump in the roadway, there was a huge cloud of white smoke coming from the vehicle and the vehicle started to lose motive power. The check engine warning light was illuminated. The contact pulled over to the side of the roadway and waited for a tow truck to arrive. The contact attempted to start the vehicle again, but the vehicle failed to start. The vehicle was towed to the dealer where it was diagnosed with engine failure due to coolant mixing with the engine oil. The local dealer was contacted; however, the vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 6,607.

Driving at 55 mph and my 6.2L engine stalled and seized up. Had it towed to GMC dealership and the verified it had seized.

The contact owns a 2022 GMC Sierra 1500. The contact stated while driving 75 MPH, there was an abnormal squeezing sound coming from the engine compartment, before the vehicle lost motive power. The contact was able to coast to be the dealer, where the vehicle was able to be restarted. The check engine warning light was illuminated. The vehicle was taken to the dealer, who determined that the engine had seized. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 73,000.

On 1 February 2025; I was stuck in the mud, in my pickup. As I was attempting to get out, my truck died. After several attempts to restart my truck; I was towed to my lake camp. Which located less than 100 yards away. Since it was no longer had a current warranty I contacted a mechanic. He arrived the following day and discovered that the engine was “locked up”. I had it towed to his shop, and he began to diagnose the engine. He has determined that the crankshaft is broken and 2 rod bearing are spun. He is currently checking for piston borehole damage. If no other damages are found, he will ordered repair parts and repair my engine.

While traveling from Florida back to Louisiana on [XXX], I stopped at a store when I came back out the vehicle would not start. I ended up having the battery boosted by a gentleman and then returned to my drive home. I drove from Quincy, Florida where the truck wouldn’t start to the [XXX] exit in Louisiana. I made 2 other stops but left the vehicle idling at both stops. At the [XXX] exit, I left the vehicle idling while I went inside and the vehicle quit running on its own. After many unsuccessful attempts, I couldn’t get the vehicle started again. I replaced the battery with no luck. Since it was Sunday night, I was unable to get the vehicle towed so I left the vehicle at the gas station and got a ride back to Baton Rouge so I could borrow a vehicle to get back to Winnfield, LA for work the following morning. My parents went the next morning ([XXX]) and had the mega switch replaced and the truck started right up. My mother then drove the vehicle to Baton Rouge, when she stopped at a traffic light, the truck quit again and she called OnStar to have it towed to Gerry Lane GMC. On [XXX], I received a call from Scott at Gerry Lane stating the vehicle had a lower engine knock and the truck needed a new engine. After multiple phone calls and my parents going to the dealership, mg parents were finally told the oil filter was filled with metal. None of that information was given in the phone call to me. I was simply told it needed a new engine with no explanation of how we got from a truck that wouldn’t start to needing a new engine. After waiting an extended time frame for them to locate an engine, I was finally able to pickup my truck on [XXX]. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The contact owns a 2022 GMC Sierra 1500. The contact stated that while accelerating to 70 MPH to overtake a dump truck, the vehicle lost automotive power and stalled. During the failure, the message "Transmission in Neutral" was displayed and the vehicle coasted to the side of the road. The contact stated that the vehicle failed to restart and was towed to the local dealer to be diagnosed. The contact was informed that the engine was faulty and needed to be replaced along with the oil delivery system. The vehicle was not yet repaired. The contact was informed of NHTSA Action Number: PE25001; and indicated that the vehicle had experienced the failure listed in the investigation. The failure mileage was 20,016.

Engine blown traveling at 35mph vehicle is currently at Lake Chevy GMC in Lewistown Pennsylvania awaiting a new engine, dealer is warrantying engine (so far) awaiting new engine dealer said it will be several weeks before receiving the replacement engine. I’m aware there’s an ongoing investigation.. Thought I’d add my vehicle to the list of engines failures during normal operation.. Vehicle has 43,XXX miles completed its first tire change the day before.

At approximately 18,000 miles the engine on my brand new GMC seized up while I was taking 4 of my employees Downtown Detroit. The engine stopped as I was merging into 3 lanes of traffic from the left lane. I had to cross 3 lanes during rush hour almost resulting in a major accident. Then I had to wait 2 months to replace the engine. 25,000 miles later, the second engine seized up while I was transporting my father between nursing home facilities. The third engine, I have recently been told only has a 12,000 mile warranty. I have requested that GM give me a 60,000 mile warranty on this 3rd engine and they refuse as it is past 30 days since the 3rd engine was installed. I should be getting a new truck, but I am just asking for a warranty. This is a known problem, which obviously has not been fixed. In both instances, there were no indications of a problem until the engine stopped running. The first time, I had 4 of my employees, which I was responsible for, in my car merging in the left lane with no engine power during rush hour, putting everyone at great risk, including other cars and people. The 2nd time, I had my [XXX] father in transit between nursing home facilities. This obviously was a very stressful event for both of us. Both of the dealerships that replaced the engines confirmed that they have been seeing this same issue in many other GM trucks. I personally know of 3 people that this has happened to. In both cases, I had to wait weeks to replace the engine because of the backlog to order the engine for other people. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

In August 2023, while driving on the interstate during rush hour, a critical engine component fell out of my vehicle, leaving me stranded in a dangerous situation. The car was towed to the dealership, where I was informed that a piston had fallen off the engine, requiring a full engine replacement. Now, in January 2025, my vehicle has once again failed—this time shutting off completely while I was driving on the Selmon Expressway, putting my safety at risk. After being towed to the dealership, I have now been informed that the engine has seized and will not turn, requiring yet another full engine replacement. This is completely unacceptable. As a loyal GMC owner, I have never experienced such catastrophic failures, let alone twice within such a short period. Engine replacements should not be a recurring issue, and I am deeply frustrated by the lack of reliability and the significant financial and safety concerns this has caused.

The contact owns a 2022 GMC Sierra 1500. The contact stated while driving at an undisclosed speed, there was a loud knocking sound coming from the engine compartment. The vehicle was driven to the residence. The vehicle was taken to the dealer and was diagnosed with engine failure. The contact was informed that the engine needed to be replaced. The vehicle was not repaired; however, the contact was informed that parts for the engine replacement repair were on backorder. The manufacturer was made aware of the failure and a case was filed. The contact was informed that the repair was covered under warranty. The failure mileage was approximately 60,800.

Engine Mileage is 72,728, on my 2022 GMC Sierra 1500 AT4, L87 V8 Engine. While driving [XXX] to drop off a co-worker at a Toyota dealership, my engine started making a strange "clicking" sound. A Toyota tech came out to look at it quick and suggested I try to get to a GMC dealer about .5 miles down the road. I made it about 100 yards before the entire truck shut down. The dash went black and then engine stopped running. Had to get towed to the dealership. Engine is considered "dead" by Diamond Auto in Worcester, MA, and the cost to replace the L87 V8 Engine is quoted at roughly $11,717.89. There have been zero prior engine issues on this vehicle. The engine failure came out of no where. Thank you for your time- [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

I have a 2022 GMC Sierra 1500 AT4 with a 6.2 engine. The truck had roughly 50,000 miles on it when the engine completely stopped working while I was driving on a busy multi lane highway during rush hour. After almost getting hit by multiple vehicles while trying to glide my truck to the side of the highway. I waited 2 hours trying to get my truck towed to a local dealership and the next day was told that my engine completely seized up and my engine needed to be replaced. I waited two months without my truck while it was at the dealership waiting on an engine that was back ordered. They told me it was complete engine failure. They couldn’t figure out why, all fluids were good yet the engine failed.

I currently own a 2022 GMC Sierra with 75823 miles on the vehicle. I purchased the vehicle new from Bill Cramer GMC, and just learned today that the engine has to be rebuilt due to bad lifters, cam shaft damage, and excessive oil consumption. According to the dealership and further research, this is a common issue with the GM 5.3L engine that is currently in my truck. Because the truck is now out of warranty GM will not cover the costly repair. Something has to be done regarding these engines, due to the thousands of people this has affected. According to the sites, no recall has been issued for these engines and its very dangerous to operate because the engine can lock up while driving.

I was driving my vehicle when is started making a loud noise coming from the engine . My vehicle turned off in the middle of road and didn't start again. Putting the safety of the other drivers and my ownsafety at risk.

Engine locked up and needs to be replaced out of warranty at 25k miles!

https://gmauthority.com/blog/2025/01/nhtsa-opens-investigation-regarding-gm-6-2l-v8-engine-failures/ I experienced an engine failure, similar to the ones that are currently being investigated by NHTSA on my 2022 GMC Sierra Denali. My safety was put at risk through the engine failure at high speeds on the highway. The engine failed and while driving through mountainous terrain, the vehicle automatically launched into neutral and I had to dodge several passing vehicles to get to a safe place on the side of interstate 40 in western NC. The problem was confirmed by the original dealership that I purchased the vehicle from. Randy Marion GMC in Huntersville NC. There were no warning lamps, messages or other symptoms prior to the incident. It was sudden and without warning.

Motor seized up while driving, brough to local gmc dealer and they confirmed it is a seized motor and needs to be replaced.

Engine failure. The engine was replaced once before I bought it at around 17k miles and then I had to replace that one around 44k miles.

The contact owns a 2022 GMC Sierra 1500. The contact stated while driving at approximately 30 MPH, the vehicle stalled; the vehicle failed to return to normal operation. No warning light was illuminated. The vehicle was towed to a dealer where it was diagnosed that the engine needed to be replaced. The vehicle was repaired. The manufacturer was notified of the failure. The failure mileage was approximately 18,000.

Started using oil and dealer said GMC says it can use 2 qts in between oil changes and few months later driving on interstate and quit running got it home and clinging and wouldn’t start got it to dealer said the engine seized up bearing spun. Took 2 months to get truck back and now afraid it will happen again. GMC should offer a buy back or different year of truck at no cost.

Day1: vehicle stalled resulting in warning lights related to the batter. Day2: battery was replaced. Day 3: vehicle was driven less than 30 miles and starting making noise under the hood. vehicle stalled in road and was towed to repair shop/dealership. I then received notice the stater needed to be replace to start the vehicle to diagnose. The vehicle started and it was determined the engine was blown and needed to be replaced.

Engine locked up while driving down interstate. Found out it’s the 2nd engine that has been replaced. On its 3rd engine now. GM 6.2L

While traveling on the highway the engine shut off. No warning, noises or lights where on before. Check engine light came on when the engine shut off. Was able to get off the road on to the shoulder. This was an huge safety concern as I had no way to move the truck. After getting the vehicle to the dealer it was a spun rod bearing. Had 7000 miles on it at the time. Dealer replaced the the parts and had the truck back after three weeks. Metal is oil pan. 1, 2 and 8 rod bearing spun scoring on main bearing and crankshaft. There was no issues with the truck prior. I bought it new.

Engine seized up. This is the second 6.2L engine that this happened to. The first one was a lifter failure and 2000 miles After replacement engine locked up. Brand new engine at 26000 miles. Now at 68000 the new engine seized up with no warning

I was on a hunting trip when my almost brand-new GMC Sierra 6.2L broke down, approximately 20,000 miles on it. The vehicle started making a ticking noise while I was driving out of state, en route to our lodge. Early the next morning the engine light came out and the vehicle came to rest close to a stop sign. I was very fortunate someone was following me in a different vehicle. The vehicle would not start afterward and had to be towed to the closest dealership. Being a new GMC owner and nearly 7 hours away from home and in an unknown area was extremely stressful. The dealership service department was closed on Saturday (the date of the incident) and Sunday. The dealership was less than helpful and did not return my phone calls on an already stressful day. My trip ended on Sunday and I was forced to rent a car at Enterprise. Unfortunately, the Enterprise I contacted did not have a truck and GMC told me that the dealership could not provide a loaner truck. I’ve needed a truck several times this month, which has caused difficulties for me and others. The vehicle has since been inspected and the service department stated the vehicle needed a new engine. This occurred 21 days ago and there is no end in sight. The service department could not tell me an exact date on when the engine would be shipped to their store.

bought vehicle in may 2022. had engine suddenly ‘lock up’ while driving on the highway to work in november 2022. towed and repaired at gym dealer through december 2022 for ‘spun bearing’. had ‘fuel sensor’ replaced in 10/23 when it failed the day before our planned fall break, towing our camper… then mid-december 2023 had camshaft part replacement when it ‘locked up’ again. got it back for 9 days when it once again ‘locked up’ (not driving this time…) and had engine completely replaced. on the first two occasions i was traveling at highway speed when all of a sudden- i lost power to the engine. thankfully i was on the shoulder side not towing anything either time!

While driving, I was starting to move following being stopped at a stop light and the truck experienced a complete engine seizure. I had it towed to the dealership I purchased the vehicle at and after a day or two, they indicated that GM's recommended fix to this particular issue was a complete engine replacement. The engine replacement couldn't be scheduled in a reasonable time. Grant it that the repair would have been covered under warranty and they would provide me a rental until such time it could be fixed, I decided to trade the vehicle in on an equivalent 2024 model (same truck 2 years newer) after being assured that it was an isolated incident and not part of a systemic problem. I only am writing this since I read an article the other day indicating that the NHTSA was launching a potential investigation into the same issue based on 39 complaints, at that time, regarding the GMC's 6.2L V8 small block engine. I wanted to let your organization know of my issue as well since I would assume that there are far more than 39 people/owners that had experience this problem. At a minimum, I make 40. In addition, I am now concerned about my 2024 GMC since it has the same motor in it. The article mentioned that there has not been injuries associated with the engine seizure. This is not surprising to me. It actually happened twice in my 2022; the first time in my driveway and another on the road. Note, after sitting for a couple of days in my driveway, it had started right up. I went for a ride to test it out and that is when the final instance happened. Both instances occurred when the auto off feature was engaged and only seized when trying to move from the auto "off" position back onto the "on" (engine running) position so I was not moving in either instance. Again, I am not concerned that this issue will arise in my new vehicle.

I am on my third 6.2L engine at 80k miles due to engine failure. It is absolutely ridiculous and is a safety issue for sure. It has left me stranded twice. And now GM is giving me a hard time about not wanting to cover it under warranty.

ABRUPT ENGINE FAILURE WITH NO WARRING SIGNS

My 2022 6.2l V8 GMC Sierra 1500 Denali Ultimate engine failed while driving 50mph on the highway. It had 18,000 miles on the odometer. The transmission locked itself in neutral while vehicle was in motion. There were no warning lights on the dash. When the vehicle came to a complete stop, the transmission locked itself in park. When I tried to shift into drive, the dash stated, "Conditions Not Correct For Shift" and stayed in park. I was stuck in the fast lane during rush hour with no options other than to wait for a tow and hope another vehicle does not ram into me from behind. My truck was towed to a local dealership and they found metal shards in the oil and said I require an engine replacement. This happened on 12/18/2024. On 1/22/2025 the vehicle is still at the dealership waiting for a new engine.

I was pulling a trailer loaded with my UTV when I suddenly lost power going up a hill. I pulled off to the side of the road and turned off the truck. When I attempted to restart it the truck wouldn’t do anything so it needed to be towed. Upon the dealer looking at it they said the crankshaft bearing broke which is a common problem with the 6.2 motor and it needs to be replaced. The truck has just over 16,000 miles on it.

On 9/23 truck just shut off while driving to work no warning just shut off costed to side of interstate got towed in at 2:30 am and was later called had engine failure. Got back out of shop on 10/16 with 86581 miles on it On 10/28 driving on interstate to ball game truck shut off again no warning costed to side got towed in again. Get call later engine failure AGAIN with 86568 miles on it. So I had the truck back less than a month with 78 miles on it with the 2nd engine failure . During all this had to purchase a new car to drive to work which is a hour each way. Now truck is fixed and we’re scared to even drive it out of town now. It really sucks they can get away with this!!!

Hard knocking and metal shaving on oil pan. Dealer said. New engine. 6.2 L

Engine suddenly started knocking and loss of power while driving on the highway. If engine had stopped or locked up it could have caused an accident. Took it straight to my dealer on Dec. 30, they said to leave it that the knocking was coming from lower part of engine. Couple weeks later they called and told me it was crank bearings. Very disappointed I only have 11000 miles on it.There was no prior warning lamps or symptoms. They have a new engine on order but said there is a nation wide back order, so no way to know how long it will take to find one.

The engine seized up at approximately 20,000 miles while exiting the highway. I took the vehicle to GM and they needed to replace the entire engine. I was told it was a common problem with the 6.2 engine by the service manager.

6.2L motor shut off with no warning with message on dash to shift to neutral and press start, nothing happened. Was able to restart and drive to dealership. Truck was diagnosed with blown motor (lower bearing failure) and new motor ordered.

Rod and bearing failure at 80k miles. I was driving down the road and the vehicle turned off leaving me stranded on the road.there was no warning

6.2L Engine burning excessive oil, so dealer per GM started an Oil Consumption test at 34,457 miles went through the process until 45,145 miles and dealer took it in at 45,468 to tear down engine, I contacted GM Aftersales and Customer Service VP and he had a representative start working the case, Engine was found to have scored cylinders on the driver's bank decision was made to replace engine. Engine was replaced and picked up vehicle and was told to bring it back in 5k miles for an oil change. I brought it back in 1k miles and retained the filter and used a filter cutter and inspected the filter. Filter had a significant amount of Metal and Metillac pieces imbedded in the filter (I have the filter still) I reported this to the Dealer and GM Aftersales and Customer Service, They noted this a normal! I then had the filter only changed at 500 more miles and still contained some debris, this is the second truck that I have owned the first was a 21 same issue first replacement failed in 25 miles, 2nd motor failed at start up and then I traded into this 22' and took a major financial hit on trade in, then a 3rd motor in the 21' and it made it so the truck could be wholesaled or sold, by this time I had bought this truck that has just had the motor replaced and currently have 7k on the new motor which was replaced under warranty. I feel confident that the metal debris that was in this engine is a contributing factor if not the factor that is causing the engine failures and suspect this engine will have the same demise. I welcome you to take possession of the filter and inspect it yourself. I have a video of the filter that I would be glad to share. These engine failures have cost me $25,000 in trade in loss.

My engine locked up on me 3 times without notice or warning at all while driving 75-80mph down the highway. All the times myself and my family were put in danger of being hit by traffic and the locations were the vehicle stopped was around a curve where other drivers wouldn’t notice until it was too late. Freezing cold and could stay in the vehicle scared we might get hit while inside. Second time it stopped at around 10:30om in the middle of nowhere in [XXX]. Even the cops couldn’t get us tow. Finally 6 hours later a friend had to come get us. I reached out to the GM CEO per email and no reply. I tried to get them to take the vehicle back and after supposedly fixing the engine after having it for 3 months I got it back with no loaner to use during this time. The engine failed again a month later. Again after supposedly fixing the engine it failed a third time. If failed the first time in January 2024 and the second time in May 2024 and then the third time in July 2024. I have anxiety and now taking medication from even driving this vehicle afraid it will stop again. Replacing the engine isn’t acceptable to me. Please help. The first place to to rebuild the engine Crossville, TN (Dave Kirk Chevrolet GMC), then it to Parks Buick GMC-Greenville: 2640 Laurens Rd, Greenville, SC 29607. and then to Loves Buick GMC, 736 Saturn Pkwy, Columbia, SC 29212. I have all the email sent to GM leaders and their executive leadership team. My vehicle had only 22,000 miles on it and I guess doesn’t fall under the lemon law in SC so they didn’t want to take it back. I feel helpless in this situation. Even getting a lawyer isn’t guaranteed a win and then I’ll be out of more money. Being a [XXX] this really sucks to be treated like my life and family life doesn’t matter. I bought the vehicle brand new from Jim Buick, GMC, Cadillac in Columbia, SC. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Truck engine just died while driving. Engine is unrepairable with metal in the oil. Has only 105,000 miles

on 12/14/24 my engine shut off while passing 18 wheeler, on my dash it said: start vehicle again. Vehicle had no power and i was forced to pull over on the side of the road. Was not able to crank the vehicle and a tow truck was called to tow my truck to the dealer. A week later i was told there was metal in the oil filter and engine replacement was required

The contact owns a 2022 GMC Sierra 1500. The contact stated that while driving on the highway at 70 MPH and depressing the accelerator pedal, the vehicle failed to accelerate as needed, and the vehicle started losing automotive power. The contact pulled over to the side of the highway and turned off the vehicle; however, the vehicle failed to restart. No warning lights were illuminated. The vehicle was towed to a local dealer where the vehicle was diagnosed, and the contact was informed that the push rods were faulty, and that the engine needed to be replaced. The vehicle was repaired. The manufacturer was notified of the failure. The approximate failure mileage 25,000

The contact owns a 2022 GMC Sierra 1500. The contact stated while driving 60 MPH, the vehicle stalled. There was no warning light illuminated. The contact was able to pull to the side of the road. The vehicle failed to restart and was towed to an independent mechanic, where it was diagnosed with crankshaft sensor failure. The mechanic referred the contact to the dealer for the repair. The contact stated that the vehicle was able to restart; however, the failure recurred while driving to the dealer. The contact was able to pull to the side of the road. The vehicle was towed to the dealer, where it was diagnosed with crankshaft sensor failure. The vehicle was repaired. The contact stated that upon picking up the vehicle from the dealer, while driving 80 MPH, the failure recurred. The contact was able to pull to the side of the road. The vehicle was towed to the dealer to be diagnosed. The vehicle was not yet repaired. The manufacturer was notified of the failure, but no assistance was provided. The failure mileage was approximately 39,400.

The coolant control valve failed, and there is a recall for a software update for a valve issue in the transmission. The DEF system is flawed with the level being shown by approximate using a computer to calculate versus a level sensor or sending unit. My NOX sensor was replaced and the check engine light came back on for the same reason. It ended up being corrected by filling up the DEF.

The contact owns a 2022 GMC Sierra 1500. The contact stated that her son had called while pulled over to inform her that the vehicle was driving rough with the check engine and several other unknown warning lights illuminated. The vehicle was taken to the dealer to be diagnosed. The contact was informed that the engine had failed and needed to be replaced. The contact stated that the dealer had since closed, and the vehicle was then towed to Marty's GMC (5 Kingston Collection Way, Kingston, MA 02364); who confirmed that the engine needed to be replaced. The vehicle had not yet been repaired. The manufacturer was informed of the failure and opened a case. The failure mileage was 78,000.

The contact owns a 2022 GMC Sierra 1500. The contact stated that while driving at various speeds, the engine was making an abnormally loud knocking sound. The contact stated that the engine would run quietly and then begin making the knocking sound intermittently. The knocking sound had increased in loudness over time. There were no warning lights illuminated. The vehicle was taken to the dealer who identified the failure as normal. The vehicle had not been repaired. The manufacturer was not made aware of the failure. The failure mileage was 25,000. The VIN was unavailable.

Just got off the highway was at stop sign on exit ramp and it just died. No warnings no lights no indication that something was about to happen. No neutral so couldn’t even push it out of the way of traffic. Had it towed to shop for diagnostic. Possible lifter problem. $600. Dealership towed it to their shop. Engine tear down, lifters replaced. Gmc to pay 30%, dealership paying $1000, me $1300. Dealership started truck and the crank bearing spun. Now needs new engine, which are on back order. Cost ??? How long before engine available??? This is a known problem by the dealerships, GM & repair shops. Had we still been on the highway when this occurred doing 75mph we could have been killed.

The contact owns a 2022 GMC Sierra 1500. The contact stated that while driving at an undisclosed speed, he heard a knock sound coming from the engine compartment. No warning lights were illuminated. The vehicle was taken to the dealer, and during an inspection, the engine seized, after which the dealer diagnosed a failure with the rod bearings. The vehicle was repaired. The manufacturer was notified of the failure but provided no assistance. The failure mileage was 31,000.

The contact owns a 2022 GMC Sierra 1500. The contact stated while driving 70 MPH, the vehicle lost power. There were no warning lights illuminated. The vehicle was towed to the local dealer but was not diagnosed or repaired. The manufacturer was contacted and opened a case. The failure mileage was approximately 14,000.

The car consumes oil to the point there's no oil in the engine. Not a result of a leak but rather the engine is actually burning it. I've taken it to 4 dealers, all confirmed it's due to Kia's bad engine design & that there's no visible leak anywhere. The kia dealer also confirmed there is no oil level sensor but only an oil pressure sensor. According to the dealer, I don't qualify for a new engine until the check engine light turns on or the vehicle results in a fire. I have to get the oil topped off every 500 miles. I don't feel safe driving this vehicle. The dealership also states I'm no longer covered under the warranty as I'm a 3rd owner. My coverage ends at 60,000. I was not aware of this during purchase of the vehicle back in 2020.

I purchased my 2022 GMC Sierra Denali Truck back in November from Ewing GMC in Plano, TX. I am a roofer, and my career depends on my vehicle. I live in Plano, TX, and was driving 80 mph back from Lubbock, TX around 12 PM Friday 3/24/23, on the highway when a notification appeared on my dash saying I needed to press the "start" button. The truck completely shut off, making it difficult for me to pull to the side of the road safely. Once I had stopped, I put the truck in "park" and it was completely unresponsive and would not re-start. I had to wait over 5 hours for OnStar to get a tow truck and get my truck. It was eventually towed to Frank Brown GMC in Lubbock around 6:30 PM that evening. I live in Plano, TX, and had to fly back the following morning. GMC in Lubbock was not able to look at the truck until late Monday afternoon 3/27/23. The service manager in Lubbock said the engine appears to be seized up internally and they have suggested a complete engine replacement from corporate. It is now Wednesday 3/29/23. I am still without a loaner truck, as Ewing GMC here in Plano will not provide me with a loaner since the truck is not in service at that location. It is not my responsibility to get the defective truck back to GMC Ewing in Plano, as the truck is still under full warranty. GMC corporate, Ewing GMC and Frank Brown GMC are not taking this situation with any urgency, and I am now responsible for paying for an $85,000 truck that does not run and GMC has not been cooperative in resolving the situation in a timely manner. I am at a loss as to what can be done and how I can proceed to get this resolved ASAP.

Engine began stubling and warning lighta began flashing.

i FEEL IT IS IN THE FUEL MANAGEMENT SYSTEM When driving along every now and then you can feel a vibration like diving on rumble strips. there is no rhyme or reason for it. I had it to the dealer and they told me that was normal, if you don't want it to do it then drive in 9th gear. I'm not going to shift to 9th every time I drive.

The engine shut off completely at a traffic light and didn’t start when I pressed the gas pedal to move. It has auto start to save gas and normally starts and stops at lights. This time, the car shut off completely, and I had to completely cycle through starting the car. I almost got rear ended because I took my foot off the brake to drive, and then nothing happened when I pressed the gas.

Purchased 2022 GMC Sierra on 1/18/2022 with 0 miles on it...On 04/08/2022 the engine started a loud knocking noise...sounded like a piston trying to shoot out of engine..very loud..I was afraid to drive it.. We took it to the dealership and they said they have had a few come back for lifter problems.... Not very happy for my purchase of a brand new truck with 0 miles on it after driving for less than 3 months...