2025 Chevrolet Silverado 1500 Engine Problems

Your truck caught fire under the hood while parked and being started at approximately 7,000 miles. The fire department extinguished the flames, but the cause was not investigated. This is a serious safety issue that requires immediate inspection to identify what caused the engine compartment fire.

Your engine experienced a sudden, catastrophic failure caused by a failed thrust bearing in the crankshaft while driving through an intersection, causing the engine to stop without warning and leaving your vehicle stranded in active traffic. The failure occurred with no warning lights or symptoms beforehand, creating a serious safety risk as other vehicles were approaching. The dealership has confirmed the thrust bearing failure caused complete engine damage and loss of power. Repair will likely require engine replacement or complete internal engine rebuild.

While driving on the highway, your truck's engine suddenly lost power and displayed a "Needs to restart" message on the dashboard. The engine went into neutral, allowing you to coast to a safe stop, but it wouldn't restart. The dealership discovered metal shavings inside the engine, indicating internal engine damage that requires a complete engine replacement.

Your engine made an abnormal sound while driving at 35 mph, then stalled and wouldn't restart. The dealer diagnosed a piston failure and determined your engine needed to be replaced. You received a remanufactured engine as the replacement, but you're concerned it might fail the same way. Your 6.2-liter engine is under a recall for this same issue in previous model years, and your vehicle experienced the failure described in that recall at just 9,000 miles.

Your truck suddenly lost power while driving on the highway and displayed warning lights for low power and oil level issues at just 4,500 miles. The engine failed completely and required a full replacement after 43 days in the shop. This will likely involve replacing the entire engine block, pistons, cylinders, and related components.

Your 2025 Silverado 1500 with the L87 6.2L engine is showing signs of internal engine wear at 21,000 miles. You've noticed a rougher idle than normal, the engine is consuming oil between scheduled changes, and you're finding metal particles in both the oil and oil filter. These symptoms suggest possible internal engine damage similar to what happened with your previous Chevy truck. A mechanic will need to inspect the engine oil and filter, and potentially perform a more detailed engine diagnosis to determine if engine repairs or replacement are needed.

Driving south on I95 under normal condition. After driving for about a hour truck started smoking under the hood. I pulled over and turned off vehicle. I released the latch to open hood. When I got out of the vehicle to lift the hood there were flames coming from both sides of the hood. I did not lift the hood. I moved away from the vehicle and called 911. Police and fire department responded and extinguished the fire. Vehicle was a total loss. GM indicates they will not investigate the cause and I should work through my insurance company for compensation.

The thrust bearing of 3.0l diesel engine is out of spec engine knocking there was no check engine lights on. The safety of this problem is I was at the cancer facility with my other half while she was getting chemotherapy when this started so I left her there went home and got are other vehicle

Was driving home from going to dinner on Jan 4th Sunday lower acceleration than usual . Did not think anything about it got up on the 5th January 2026 to goto work got on the interstate and a message power decline drove carefully. I changed direction and started driving to the dealership right as I got to the stop light by the dealership I got a message low oil pressure turn engine off. At which time the dealership checked the truck said the oil pump faulted and caused the engine to burn up,

On 11-20-25 while driving vehicle home a loud noise was heard coming from rear of engine. After review and consultation with automative technician it was thought best to park truck in safe location at house and have towed to dealership as engine noise identified aligned with other reports of thrust bearing failures associated with this engine. Driving engine further was considered unsafe if further damage occurred the engine could seize up while on highway. The Dealership tested engine on 11-21-25 in accordance with GM technical service bulletin and confirmed a thrust bearing failure had occurred. A replacement engine and turbo were submitted for order, but not available to due to back order of these parts due to large number of failures of same engine this year. Only the GM dealership that I purchased car from has inspected vehicle at this time and there were no check engine lights in vehicle when failure occurred. I have since identified the GM technical service bulletin was published in September of 2025 and the Duramax 3.0 has had numerous failures throughout 2025, prior to my purchasing vehicle at end of October. GM manufacturing misrepresented the quality of vehicle during the new vehicle purchase and did not disclose the significant number of engine failures that have occurred this year that could have left me and my family in an extremely unsafe situation. Additionally there has been no communication on how the replacement engine equipment manufacturing has resolved the issue that created the initial failure and I am concerned of driving vehicle in future as the engine failure may occur again. NHTSA needs to record this incident and request to GM failure rate data this year and investigate GM for selling vehicles with known manufacturing issues that place driver/passengers in an unsafe condition when vehicle looses power while driving.

2025 Chevrolet 1500 Silverado High Country 6.2 L motor with 5624 miles blown motor. When I tried to start it, the motor made a noise like someone tossed a handful of spoons in a blender and turned it on. Motor shut off on its own. This was on Sunday December 21st of 2025. Truck as towed to Westly Chapel Chevrolet in Westly Chapel Florida on Monday December 22nd of 2025. Chevrolet Customer Service was called on Monday December 22nd of 2025. The Case # XXX. I spoke to 7 different people before a manager called me later that evening and said my case manager will be Tyisha. The manager stated she was Tyisha's direct manager and that Tyisha would reach out to me within 2-3 days. The manager also stated that she was unaware of the 2021-2024 issues with the 6.2 L motor. I informed Customer Service I wanted a buy back and that 7 Service Departments told me that motor replacements are taking 3-6 + months. Ive been told the repair for the 6.2 L has not been properly addressed and the new motors are still have catastrophic failures. I spoke to 7 local Chevrolet Service departments. Each one said they had several of the 6.2 L motors in with major failures. Some brand new 2025. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Took 2025 Silverado with a 6.2L engine to get oil changed and tire rotation done. Upon completion drove out of dealership and notice a weird noise coming from engine, then kind of disappeared. Drove home. Wife took car for gym then suppose to go to work. She called stating engine sounded really bad, like a lot of metal and metal screeching. Went to dealership, explained and they towed truck to service department to be looked at on 12/22/2025. Safety to others would have been detrimental if the vehicle had seized on the highway. The dealer person who sent for the tow was not the service manager but when we arrived he heard what the vehicle sounded like. No check engine lights or any warnings on. Hope to have results on Monday.

I was driving home from a camping trip with my children when my truck occurred a reduce speed error on the dash and the truck went into limp mode. I found out through GM Onstar that the truck threw a PO6DD code. The vehicle was towed to dealer and the oil pressure valve was replaced and also a wiring harness.

I was driving down the highway with my children to see a movie when my trucks check engine light came on and started surging and losing power we were struggling to drive 5 mph on the shoulder of the road to make it to the closest exit ramp for a safe place to stop. We were able to make it to the ramp but couldn't exit completely because it was an up hill grade. The vehicle was towed to the dealer for a complete engine replacement. The vehicle suffered from a thrust bearing failure.

I had just received my truck back from a complete engine replacement from the dealer and had driven it 10 miles back to my house and the check engine light came on and the dash said reduced power service DPF system. The truck was towed to dealer for PO302 code and injector #3 was replaced.

traveling at 75 MPH on highway truck went into reduced acceleration mode putting my wife and I in danger. There were many simi trucks having to swerve as my vehicle reduced speed at a high rate and was unable to safetly come to a stop. there was a bulletin released prior to my purchase that was not disclosed that could have warned of potential danger of complete engine loss. was told by dealership engine grenaded dealership confirmed needed new engine and turbo and they are on back order which leads me to believe that I am not the only one this has happened to.

I purchased the vehicle on 8-23-25. On 10-23-25 while driving my daughter to school I received a message on the dashboard that said "reduced acceleration mode drive with care." I immediately drove to the dealership. After a few hours I was told by the dealer that the diagnostic code of PO6DD "Engine Oil Pressure Control Solenoid Valve Stuck Off" had been recorded and a full engine replacement will be required. The vehicle has 3307 miles on it and has been at the dealership since. Engines for this vehicle are on back order and there is no timeframe available on when a new engine will be available.

6 weeks since purchase and only 2000 miles-engine suddenly made a horrible rattling noise and stalled. Towed to dealership and was told engine was dead and needed replacement.

At 5,750 mi. the 6.2 gas engine seized due to connecting rod bearings. The dealer replaced the engine, cooling system and oil cooling system under warranty with a similar engine. I am of the opinion that it could have been at least partly due to the low viscosity motor oil that the manufacturer insists upon to maintain the factory warranty, 0-W20 synthetic, along with a poorly engineered fuel management system. Also, once the vehicle was stopped and put into park, the electronically controlled transmission refused to change gears, to be put into neutral, in order to be pushed out of traffic and on to a tow vehicle, it had to be dragged. The vehicle is extremely unreliable and a danger to the public.

The "Auto-stop" feature of the engine apparently automatically turns itself on every time the engine is started. there is no warning light or other indication that it is on except a very small light ON THE SWITCH TO SHUT OFF. The auto-stop function itself is inherently unsafe because it shuts the engine off and doesn't restart it until the operator removes his foot from the brake.... -sometimes it takes several seconds to restart. If you take your foot off from the pedal and then put it back on and the vehicle rolls back a bit, it may not start at all, necessitating shifting to park and manually restarting the engine. If it does start late, the engine may surge and the vehicle will lurch ahead into traffic. I have had two close calls because of the "auto-stop", once causing a semi-trailer truck to veer away to miss me. Any driver that fails to disengage the auto-stop function on engine start is putting his own and other peoples lives in danger. NO FEATURE AFFECTING ENGINE ON-OFF, VEHICLE SPEED, STEERING , OR BRAKING SHOULD EVER BE ENGAGED WITHOUT A SPECIFIC COMMAND BY THE OPERATOR OF THE VEHICLE. WHEN IT IS ENGAGED, BY THE OPERATOR, AN AMBER WARNING LIGHT SHOULD SHOW ON THE DASH PANEL AND STAY ON AS LONG AS THAT AUTOMATIC FEATURE IS ENGAGED. IF NOT, THE VEHICLE MANUFACTURER SHOULD BE HELD TOTALLY AND SOLELY RESPONSIBLE FOR ANY ACCIDENT THAT OCCURS AS A RESULT OF THAT FEATURE.