My 6.2L is experiencing engine knocking. Sounds like ball bearings rolling around at idle and acceleration. Its been seen by GM dealer and they notice "something" isnt right but say its not part of recall at this time. They want it to fail more before pursuing.
2021 Chevrolet Silverado 1500 engine complaints
Page 2 of 16: complaints 11 to 40 of 453, newest first, as owners wrote them.
The contact owns a 2021 Chevrolet Silverado 1500. The contact stated that while driving 60 MPH, the check engine warning light illuminated. The vehicle was taken to the dealer, where it was diagnosed that the engine coolant control valve had failed and required replacement. The vehicle was not repaired. The VIN was not included in Special Coverage Program: N252508341 (Coolant Control Valve), nor was the VIN included in the associated technical service bulletin. The contact stated that the failure occurred on several occasions. The manufacturer was not notified of the failure. The failure mileage was 77,000.
Coolant control valve Is available for inspection Safty issues include Loss of power steering and brakes while driving Sudden power limp mode Sudden engine over heating and engine seizure Loss of visibility due to smoke and Loss of defrosting Inspection done by chevolet (live oak Fl) Check engine light and code p1098 appeared after defect.
Chevrolet Silverado 1500 6.2L Truck was driving and fully lost capability to accelerate. Truck alarmed driver to shift to neutral and restart engine. Attempt to restart engine was not successful. Error code was sent via email in a diagnostic report to owner with code P0016. No check engine lights or alarms were on the dash. Truck is currently at an auto mechanic. Safety issue was leaving driver and passengers stranded. Auto mechanic states truck needs new engine. Tried to verify VIN to the GM recall notice (N252494000) and was told not included in recall, even though truck has same motor listed in recall AND giving the error code. There was no warning messages, lights or symptoms prior to this failure. Request to have this complaint investigated to be included in the recall with the information provided.
Chevy Silverado 1500 6.2L Truck lost acceleration while driving. Truck advised driver to shift to neutral and restart vehicle. When driver did, no resolve. Error code with diagnostic report was immediately emailed to owner with error code of P0016. Mechanic advises truck needs new engine as this is a common issue with this year of truck that was included in a recall. After further investigation, truck vin is NOT included in recall as other GM vehicles (same engine & year). Would like this investigated as this truck should be included with the recall.
On my way home to [XXX] from [XXX] around XXX, my 2021 Chevy Silverado with 84,xxx miles with the 6.2 L engine started to make a popping sound. I checked my dash for any error codes and there were none. The oil pressure, temp, and transmission temp gauges all read normal. I stopped and topped the gas tank off with premium gas and checked the oil level, which was good. I was able to limp the truck back to my house. The next morning when I started it, there were error codes and the engine was still making the popping noise as well as a louder knocking noise. I started researching the symptoms, called two local independent shops and concluded the DFM system that shuts cylinders off to conserve gas has failed and caused the lifters to fail. I was told the failed lifter could and probably did damage the cam shaft(s). If I kept driving it, the camshaft damage could cause complete engine failure and more safety consequences. One shop quoted $5000 to replace lifters and $8000 if the camshafts were damaged. The other shop was similar, but offered a rebuilt engine for $12,000 because the lifters, camshafts, and new GM crate engine were all back ordered with no ETA from the local Chevy dealership. After weighing my options, and needing a truck, I decided to trade in my damaged truck. I contacted the GM concierge on XXX and was told to call back when the dealership had my damaged truck and could diagnose it. On XXX I called them back and they said they wouldn’t help because I traded it in. I had no plans to trade it before the engine failed and took a substantial hit on the trade in price that GM should have helped with to cover their faulty DFM system that caused the lifters to fail, which the dealership confirmed was the problem. They said they wouldn’t know if the camshafts were damaged until they took it apart, which they decided to not do and send it to auction instead. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
2021 Chevrolet Silverado 1500 with the 6.2L V8 (RPO L87), built November 2020. Mileage at failure: 11268. On XXX the check engine light came on with DTCs P0011 and P0016. The engine developed a rattle at startup and when lifting off the throttle around 40 mph. On XXX Fowler Chevrolet ([XXX]) isolated the abnormal engine noise to the crankshaft bearings. Cutting open the oil filter showed excessive bearing material. The dealer advised engine replacement before complete engine failure and quoted $12,561.66. This is the same failure described in recall 25V‑274 (GM N252494000): crankshaft/connecting rod bearing failure in the L87 engine, which can cause loss of propulsion while driving. My VIN is not included in the recall because it was built before the XXX start of the recall build window. The engine is the same L87 and failed the same way. The vehicle has been maintained with regular oil changes and I have records. GM Customer Assistance case XXX was opened XXX. The vehicle is currently not safe to drive due to risk of engine seizure and loss of motive power. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
I was traveling on a 55mph road. My Chevy Silverado started to shake and lose propulsion. I pulled off on the side of the road. In idle it shook. The dealership was one mile to my south. I turned on the hazard lights and went to the dealership. I could only get the vehicle to 45mph as in shook very bad the whole way. It felt as if the engine was going to explode the whole way there. The vehicle was taken to the dealership where it has been initially diagnosed as a bad lifter.
The contact owns a 2021 Chevrolet Silverado 1500. The contact stated that while driving approximately 35 to 40 MPH, the vehicle stalled and failed to restart. The contact retrieved DTC: P228C and P030 after scanning the vehicle. The vehicle was towed to a service center, where the contact was provided DTC: P228C, P0340, and P0C6. The contact was informed that the timing chain and guide had failed and that the engine needed to be replaced. The vehicle was not repaired. The failure mileage was approximately 172,000.
The contact owns a 2021 Chevrolet Silverado 1500. The contact stated that while driving at an undisclosed speed, the vehicle was smoking. The contact stated that the engine was smoking heavily with a strong oil odor, before the vehicle shut off. The contact stated that the engine warning light was illuminated. The vehicle was restarted and driven to the dealer. The manufacturer was notified of the failure. The vehicle was taken to the dealer, and the technicians confirmed the engine failure. The contact was informed that the engine needed to be replaced. The vehicle was being repaired. The failure mileage was 78,000.
I am submitting this complaint regarding a 2021 Chevrolet Silverado 1500 Trail Boss 4WD with the [6.2L V8 (L87)], VIN [XXX], 101,000 miles. The truck was assembled in Mexico in XXX, about six weeks before XXX, just outside the build range of GM recall 25V‑274 (N252494000, Engine Failure). On 10/2/2026, [XXX], [XXX] a certified GM dealership, diagnosed crankshaft and lifter failure, matching the recall condition. Codes: P0300, P050D, P0016. The truck was shaking violently, the ESC and emergency braking system failed, reducing engine power. GM's Part 573 filing attributes the defect to out-of-specification crankshafts and identifies a Mexico-based crankshaft supplier. I ask GM to confirm my engine's build date and crankshaft source. A six-week gap in build date should not exclude a truck with the same failure. Engine failure can cause sudden loss of power while driving, a safety risk. The dealer quoted repairs of up to $10,292.00. I request: That GM cover the repair in full as a goodwill adjustment. That GM and the federal safety agency review expanding the recall population to trucks built near my date. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
The contact owns a 2021 Chevrolet Silverado 1500. The contact stated that the vehicle experienced excessive oil consumption at 2,600 miles. The vehicle was taken to the dealer, where it was diagnosed with a blown engine. The engine was replaced; however, the contact stated that the replacement engine continued to consume a significant amount of engine oil. The vehicle was taken back to the dealer, where the replacement engine was diagnosed with premature engine failure at 37,100 miles. The contact stated that during the engine failure, there was an abnormal sound coming from the engine and transmission. The manufacturer was notified of the failure. The contact stated that the vehicle had been taken to the dealer every 1,000 miles for oil to be added due to the excessive oil consumption. The dealer confirmed the initial engine failure and the premature failure with the replacement engine. The failure mileage was 37,100.
My truck is the 2021 with the 6.2l L87 motor. My truck is not in the scope of the recall but i had the same failure and received a remanufactured engine without any warranty coverage.
This vehicle's engine failed on a high-volume roadway in [XXX] which resulted in a significant safety issue. The vehicle was taken to a certified Chevrolet dealership in Scottsdale (Van Chevrolet) whereby the engine in this 5.3L V8 was replaced due to catastrophic engine failure with the lifters being the suspected cause of the failure. Aside from the $10,400 cost of the remanufactured engine replacement, I have had considerable discussions (live and written) with GM Arizona and Corporate representatives outlining the issue(s) and filing formal complaints. These have gone relatively unheeded... Unfortunately, this is the second 5.3L V8 engine failure in one of our GM vehicles as I will be filing yet another formal complaint under separate cover for a 2021 Tahoe 5.3L V8 which had an engine failure requiring new lifters. I am not done yet as I have an appointment tomorrow for what appears to be, a third Chevrolet vehicle with a 5.3L V8 engine lifter failure. Depending on the outcome of this service appointment, I may be filing a third safety complaint regarding the GM 5.3L V8 engine. In my opinion, the federal safety agency should absolutely open an investigation into this engine in the same manner that you have a formal investigation/recall in effect for the 6.2L GM engine as based on two personal experiences, the safety of the driver and passengers in these vehicles is compromised due to what appears to be significant engineering and/or manufacturing issues on the part of General Motors. Thank you for your consideration and I am free to discuss in further detail at [XXX] or [XXX]. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
the engine seized. I tore into the motor to inspect what caused it and it spun a connecting rod bearing on cylinder 1. I have been paying 600 a month on it without being able to drive it since this happened in november of 2024.
My truck started skipping and over time the check engine light came on. I took it in and they are saying it is the lifters, which is costly. I know this truck was built during COVID and I know a lot of the manufacturers were dealing with skeleton crews. I heard this was an issue with the 2021 Silverado trucks, and a recall. Can you please advise?
The water pump went bad at 31,000 miles. If I continued driving and the pulley fell off the engine would overheat. I took it to the dealer and they confirmed the pump failure and want me to pay over $1,400 for repair that should be covered under warranty. There was no warning lamps lit, the pump just started making a grinding sound.
Engine failed and truck caught on fire from the engine failure
2021 silverado engine failure. Yes it was inspected by a dealership and my extended warranty company and serviced by the dealership. Back on August 5th I experienced a misfire cylinder 3 and felt loss of power. On August 7th the dealership diagnosed both camshafts, 1 lifter, 1 valve, and 1 fuel injector was damaged and never received at warning lights or messages on the dashboard. I was without the vehicle for 39 days and within 10 hrs after picking up the truck i got an engine light on and several new codes on it and can not be driven and being towed. I feel these engines need a recall as it is well documented that these engines go between 60 and 80,000 miles and some a lot less than that, mine has 70,800 and went and now being towed with in less than 24 hrs after engine repair. I will be in contact with a lawyer to follow up on this matter.
Engine noise, unable to pass or fail pico test due to to much noise in truck. Engine failure.
LM2 engine coolant control valve failure. My vehicle VIN is not listed for the repair i dont know how it is not but they want me to pay outa pocket
Statement for the federal safety agency Subject: Safety Complaint – 2021 Chevrolet Silverado Unexpected Jerking/Harsh Transmission Engagement I am submitting this complaint regarding my 2021 Chevrolet Silverado 1500 2.7L Turbo with approximately 128,000 miles. My vehicle has developed a recurring problem involving harsh/jerking transmission engagement, hesitation, shuddering and abnormal shifting. The truck can jerk when engaging or changing gears and has also experienced a hard engagement when shifting from Reverse into Drive. During normal driving, the vehicle can hesitate or feel as though it is repeatedly fluttering/shifting instead of providing smooth and predictable acceleration. The vehicle has produced diagnostic trouble codes including P0700, U0100 and P0420. I am concerned that this condition could create a safety hazard, particularly if the vehicle unexpectedly jerks, hesitates or fails to respond normally when accelerating or changing gears in traffic. I am requesting that the federal safety agency document this complaint and review whether there is a pattern or potential safety-related defect involving transmission engagement, shifting or drivetrain control on 2021 Chevrolet Silverado vehicles. GM has published service information concerning delayed and harsh transmission engagement on certain Silverado applications, including 2019–2021 models, which makes me concerned that my vehicle may be experiencing a related issue. I am retaining my repair records, diagnostic information, receipts, videos and mileage/date information documenting when the problem occurs. I am willing to provide this information if requested. Please help me get my truck corrected, I love my Chevy Truck. Thanks Sincerely [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
My 2021 Chevrolet Silverado 1500 RST with the 6.2L engine experienced an engine seizure. The engine was replaced by a Chevrolet dealership under a GM safety recall. Immediately after picking up the vehicle following the recall engine replacement, the truck stalled while still in the Chevrolet dealership parking lot. There was no warning before this first stall. We continued our trip because we did not realize at the time that the stall could indicate a problem following the engine replacement. During the drive from [XXX] to [XXX], the problem continued. In [XXX], the check engine light illuminated and the truck began malfunctioning. The vehicle subsequently stalled again. The problem continued after returning to [XXX]. A Chevrolet dealership in [XXX] inspected the vehicle and reproduced/confirmed a problem involving the camshaft position sensor wiring/connector. The dealership demonstrated the problem by manipulating the connector/wiring and recorded a video of the diagnostic procedure. The vehicle is currently at the Chevrolet dealership and is available for inspection. The affected component should also be available for inspection because it has not yet been repaired. The [XXX] dealership has characterized the wiring/connector condition as normal wear. However, the first stall occurred immediately after the GM recall engine replacement, while the vehicle was still on the repairing Chevrolet dealership's property. Unexpected engine stalling creates a serious safety risk because the vehicle can lose propulsion without warning while driving, including at highway speeds or in traffic. I am concerned that the camshaft position circuit/wiring/connector problem may be associated with the recall engine replacement procedure or replacement engine. I am requesting that the federal safety agency investigate whether other vehicles receiving this GM 6.2L engine recall remedy have experienced similar camshaft position circuit failures or unexpected stalling after engine repair. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FO
Following recall review by the dealership, experienced sudden, catastrophic engine failure nearly stranding me on the road with my son. Awaiting final diagnostics from the dealership, but every indication, errors, and symptoms align with all the other complaints that I have reviewed on line for the make/model of my vehicle. Recall assessment and corrective actions ineffective resolving engine failure.
The contact owns a 2021 Chevrolet Silverado 1500. The contact stated that while attempting to start the vehicle, there was an abnormal sound coming from the front driver's side of the vehicle. The contact inspected the vehicle and became aware that the exhaust manifold bolts had detached. The dealer was made aware of the failure. The contact was informed that the warranty mileage limitation had been exceeded. The manufacturer was contacted by phone, and a case was filed. The contact was advised to contact the federal safety agency Hotline to report the failure. The failure mileage was approximately 62,248.
Loss of power , catastrophic engine failure
My engine has been replaced twice already for total failure first time was in November 2023 and the second time was May 2026.
Vehicle went into reduced power mode and was taken to the dealership. They had to tear down the motor to diagnose the problem and determined it was the crankshaft and the motor needed to be replaced. It was out of factory warranty however it has an extended warranty and the warranty covered 80% of the repair. We still had to pay over $3k out of pocket. Vehicle is now making engine noises again and will be getting taken back to the dealership to be looked at. Currently not part of the recall however truck was built at the Mexico plant in question. We believe it may have the faulty components as well.
The contact owns a 2021 Chevrolet Silverado 1500. The contact stated that upon starting the vehicle, the engine was idling rough and the vehicle vibrated violently. The contact stated that while accelerating, the vehicle hesitate while responding. There was no warning light illuminated. The vehicle was taken to a local dealer to be diagnosed; however, no cause for the failure was found. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 70,000.
Took it to the dealer for the L87 recall back at the end of April 2026. GM stated that my truck passed the inspection and “upgraded” my oil to the new 0w-40 oil. Now 8-27-2026, 6500miles after the inspection. Driving to work in the morning, and my engine failed. What I believe happened was a lifter got stuck and the engine shook and all lights on the dash were flashing. Vehicle is currently at the dealership and they are saying the “special” warranty does not cover this failure. Which to me is completely unacceptable. Because for 72,900 miles I never had an issue with the truck. But 6500 miles after they changed the oil to the thicker oil now I have an engine failure.
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