2021 Chevrolet Silverado 1500 — Known Issues & Recalls

Your rear wheels suddenly locked up while driving, causing the transmission to stop responding and refuse to shift into gear until you restarted the truck. This happened three days in a row with no warning beforehand, and a check engine light appeared after the first incident. Your truck is currently at the dealership for diagnosis, though you've been informed it doesn't qualify for a related recall despite matching symptoms.

Your 2021 Chevrolet Silverado 1500 with a 6.2L V8 engine experienced sudden loss of power and severe shaking while driving, forcing you to make an emergency stop. You heard loud knocking from the engine and check engine lights appeared; the dealership diagnosed catastrophic engine failure with blown rods and crankshaft, requiring complete engine replacement. Despite your vehicle having only 24,000 miles and regular maintenance, your powertrain warranty had expired two months prior, leaving you responsible for over $12,000 in repairs — and a recall for this exact issue exists but your vehicle wasn't included. The repair will involve removing and replacing your entire engine with a new or rebuilt unit.

Your truck experienced two concerning transmission issues: once it lunged forward unexpectedly at low speed after braking, and another time at highway speed the transmission shifted into neutral without warning while the drive light flashed. In the second incident, your husband was able to safely coast to the roadside and stop. The dealer inspected the vehicle but couldn't identify the root cause, though they performed a repair anyway. This issue could involve transmission fluid problems, solenoid malfunctions, or internal transmission wear that may require professional transmission diagnostic testing or potential transmission service/rebuild.

Your transmission has a faulty valve body that controls how your transmission shifts gears. This is a known issue affecting many GM vehicles, but because your truck is out of warranty, the dealer won't cover the repair. Replacement parts are currently in short supply. Replacing the transmission valve body will require removing and servicing the transmission.

Your Silverado won't turn off when you shift to Park — instead, you see a "Shift to Park" message on the dashboard. Jiggling the gear shifter makes it work temporarily, but the problem keeps happening randomly. The only way to fully shut down the vehicle is to disconnect the battery and reset it. This issue started around 53,000 miles and may involve the transmission shift mechanism or its electronic sensor needing adjustment or replacement.

Your engine suddenly made a loud clunk noise and the oil pressure gauge dropped to zero, indicating a catastrophic failure. The engine will need to be replaced. This repair typically involves removing the failed engine and installing a replacement or rebuilt engine.

Your truck has been experiencing severe jerking and rough shifting that makes it unsafe to drive. This issue persisted even after multiple dealership visits and months in the shop while under warranty. The problem appears to be related to the transmission, and resolving it may require transmission fluid service, software reprogramming, or in some cases transmission replacement or rebuild.

Your check engine light came on, and a diagnostic revealed your crankshaft bearings are failing in your 2021 Chevy Silverado 1500 with the 6.2L engine. Although your VIN wasn't initially included in a recall for this issue, the dealership confirmed your engine was built at the same plant where recalled engines were manufactured and failed for the same reason. GM is only covering about 30% of the $10,000+ engine replacement cost, leaving you responsible for the majority of repairs. A full engine replacement will be needed to fix the failing bearings.

Your 2021 Silverado's 6.2L engine has failed and requires complete replacement. GM has not issued a recall for your specific vehicle identification number (VIN), so this repair may not be covered under warranty. You'll need to contact your Chevrolet dealer to discuss repair options and potential warranty coverage.

Your truck experienced a complete loss of power while parking, and a few weeks later you began hearing knocking noises from the driver's side of the engine. This suggests a potential internal engine problem that needs prompt attention. A mechanic will likely need to diagnose the knocking noise through a compression test or borescope inspection and may need to repair or replace internal engine components.

Your check engine light came on while driving, and your engine shut off at a traffic light with smoke coming from the battery area. A loose ground wire was repaired, but just 10 miles after pickup, your engine made a loud boom and clanking noise and failed completely. The dealer diagnosed it with issues affecting other 6.2L GM engines, though your vehicle's VIN isn't currently covered under the related recall. Repairs will likely involve diagnosing the electrical ground connection and engine internal damage.

Your transmission has failed and needs a new valve body and torque converter, but these parts are on national backorder and unavailable. Your truck has been at the dealership for over 70 days and is not drivable, with no confirmed repair timeline or completion date from the manufacturer. The dealership has stopped providing regular updates since mid-March. Repairs will require replacing the transmission valve body and torque converter once parts become available.

Your truck's high-pressure fuel pump, lifter, and camshaft have failed, causing rough running, surging, and loss of power without any warning light appearing first. The dealership confirmed these are known defects on your model year and acknowledged the parts were faulty from manufacturing, but denied warranty coverage because you exceeded the powertrain mileage limit by 10,000 miles. Repairs will likely involve replacing the fuel pump, lifter, and camshaft, and possibly inspecting for any internal engine damage caused by these failures.

Your engine suddenly seized while driving at 50 mph, leaving you unable to steer or brake properly until you could shift to neutral and get help pushing the vehicle to the side of the road. This happened about five months after your vehicle passed a recall inspection for engine and engine cooling issues, suggesting the recall fix didn't actually resolve the underlying problem. The engine seizure typically results from complete loss of lubrication or internal mechanical failure, which may require engine replacement or a complete overhaul.

Your truck displayed a "Service DEF System" message while driving at 65 MPH, followed by the check engine light turning on. Your vehicle's speed then gradually decreased in 10-15 MPH increments until it could only go 5 MPH after driving 75 miles. This problem happened more than once. A dealer diagnosed that your DEF tank heater module needed replacement, but because your truck has a salvage title, the manufacturer said it wasn't eligible for the repair under warranty.

Your brake master cylinder has failed multiple times — first replaced in April 2025, then the problem returned in December 2025 and again in February 2026. When this happens, your brakes don't respond correctly, you hear a clicking sound when pressing the pedal, the pedal becomes stiff, and your dashboard shows warnings like "Brake System Failure" and "43MPH Top Speed Limit." This creates a serious safety risk, especially while driving. Fixing this requires the dealership to diagnose why the master cylinder keeps failing and either replace it again or identify and correct the underlying cause.

Your tailgate has opened unexpectedly while you're driving at various speeds and also while your truck is parked. Even after closing it, the tailgate reopens within a few seconds on its own. This could create a safety hazard if cargo falls out while driving. The issue likely involves a faulty tailgate latch mechanism that needs inspection and possible replacement.

Your truck's electronics occasionally freeze up, and the stereo may turn off without responding to attempts to turn it back on. The transmission hesitates, then revs up suddenly before engaging gear with a hard jolt, and you may feel significant vibration from the transmission at certain highway speeds. The issue likely involves a combination of electrical system glitches affecting both the infotainment and transmission control systems, along with potential transmission fluid or mounting problems.

Your truck is shaking abnormally while driving at various speeds, and multiple warning lights have appeared on your dashboard: the Service Electronic Stability Control light, Parking Brake light, a wrench symbol, and Check Engine light. This combination of warnings suggests a problem affecting your engine, brakes, or stability control system. A mechanic will need to scan your vehicle's computer codes and inspect the engine, brake system, and ESC components to identify and fix the underlying issue.

Your dealership told you they can't complete a safety recall repair until you pay $1,100 to replace the idler pulley first. The dealer says the pulley replacement is needed because it can cause noise and vibration that would interfere with their engine testing. You're concerned about driving with a known safety issue that could cause engine failure and increase crash risk. Replacing the idler pulley is a mechanical repair that involves removing the old pulley and installing a new one.