general problems of the 2021 Chevrolet Silverado 1500 - part 1

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.

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.

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.

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 NHTSA 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 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 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 noise, unable to pass or fail pico test due to to much noise in truck. Engine failure.

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.

Loss of power , catastrophic engine failure.

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.

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.

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 NHTSA 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.

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.

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?.

Statement for NHTSA 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 NHTSA 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 michael fields.

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.

Truck started violently shaking while driving 70 mph on highway. Check engine light, service electric parking brake warning light, tcs/esc warning light, started flashing on tachometer. Check engine light remained on when truck was restarted later. Chevy dealer service department reproduced problem and found broken bits of metal in the oil filter. Engine is shot. Likely caused by truck's dynamic fuel management system. Dealer advises only option is to replace engine. Truck was up to date on all service maintenance.

Number 2 cylinder lifter failure. Metal found in oil. Need to replace the engine.

Lifter and cam shaft failure rendering vehicle unable to run on the side of the road 5 hours from home.

As of August 19, 2026 my engine suffered a catastrophic failure with code p0016 which is cranckshaft camshaft lifter failure. Engine will be replaced. Currently at the dealership for replacement. Had the truck for 2 months and I’m requesting that gm fully replace my truck with a different one because I’m sick of hearing all the failures going on with the 6. 2 engines. Such as my truck.

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).

Currently had my engine go into "limp mode" after checked engine light came on with code p1010. The coolant control valve is what is the problem, and gm/chevy has issued a special coverage on this known part for my year make and model (bulletin n252508341). However, according to the dealership, my VIN does not qualify for this known issue, regardless of my faulty part matching the special coverage for the year make and model of my vehicle. Now I'm stuck paying for the empty promise from chevy.

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.

While driving at ~50mph, the truck immediately went into reduced power mode, temperatures spiked to 260 from 210. Engine code p1006 showed indicating coolant control valve failure. After experiencing, I discovered that gm issued special coverage for coolant control valve (n252508341). However, the local chevy dealership indicated my truck would not be covered even though it is within the timeframe/mileage, and falls in the year/make/model categories. According to them, the coverage is VIN specific and my VIN is not listed. They directed me to Chevrolet customer care. Customer care did not acknowledge the special coverage until I directed them to the correct bulletin. They further indicated because my VIN was not covered, they would not be able to do anything. This issue is highly known by gm, but they have failed to remedy appropriately. It is also a safety hazard, especially in my case, where the failure occurred on the highway, at speed with cars behind me, and resulted in the truck immediately ceasing normal operation causing the potential for property damage and/or injury.

The contact owns a 2021 Chevrolet Silverado 1500. The contact stated that while driving at an undisclosed speed, the vehicle came to a complete stop without warning. The contact stated that the failure had occurred twice. During the first failure, the vehicle was towed to the dealer and a lifter inside the engine was replaced. The contact stated that after the second failure, the contact allowed the vehicle to sit for a while before restarting the vehicle and continued driving. The vehicle was driven to the dealer, where it was diagnosed and determined that a lifter and the camshaft needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 73,000.

2021 chevy silverado 5. 3 trail boss lifters has failed on this driver two times while driving on highway engine lost power with my family in the vehicle. Dealer warranty fixed lifter the first time lifter went out at 1100 miles. The vehicle has failed again with multiple lifters going out and camshaft needing being replaced also on my extended warranty at 73000 miles. I do not want to take this vehicle back in my possession as it has put me and my family at risk twice being stuck on highway with no power.

The contact owns a 2021 Chevrolet Silverado 1500. The contact stated that while his wife was driving approximately 65 mph, the vehicle lost power and stalled. The vehicle failed to restart. The vehicle was towed to a dealer where it was diagnosed with an internal engine failure. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was approximately 120,000.

I have a 2021 silverado with the 6. 2l engine. I had received the recall notice, but it took several months before I could get the truck checked. By the time I was able to get it inspected, the truck had over 100,00 miles, with the symptoms associated with the 6. 2l engine failure. It was said to have passed inspection, but I had my doubts. Low and behold, my engine failed not once but twice. The first time I was told it was not due to the recall and paid out of pocket. The most recent failure, (same exact failure as before, and nearly caused an accident) happened last week. I towed it to a different dealership than where it was inspected and where the last repair occurred, and was told it needed a new engine. I called and was told by the dealership that a new engine was ordered, and they were waiting to hear back from gm on if they would cover it or not. I was also told they were very confident gm would cover it, and that is why they ordered a new engine. A few days later, I get a call and find out gm is in fact not covering it and the repair is around $12,000. I am beyond frustrated at gm for not taking accountability, and the dealership for giving me false hope that this would be covered.

The coolant control valve (dtc code p1098) is failing and only certain trucks are covered under gms special coverage, being as this is a common issues why aren't all the trucks covered.

About 2 months after bringing the truck in for the engine recall, my oil cooler blew up and I required that to be replaced, along with the radiator and hoses.

An engine lifter broke in my 2021 chevy Silverado 1500 (6. 2 liter) and it bent a push rod. The truck was towed to the dealership where it was purchased. They replace all the lifters on the failed side and the bent push rod. The reason I am reporting this is because it happened at a very unfortunate time and could have resulted in a major accident if the engine would have seized. I was turning a corner, crossing oncoming highway traffic, and pulling our camper/travel trailer. I see that it has been a relatively common problem with the gm 6. 2l and even some 5. 3l motors and appears to be related to gm's active fuel management (afm).

The contact owns a 2021 Chevrolet Silverado 1500. The contact stated that the engine occasionally overheated. The check engine warning light was illuminated for a day, and there were six diagnostic trouble codes displayed. The vehicle was taken to the dealer to be diagnosed, and it was determined that the coolant flow control valve was inoperable and needed to be replaced. The vehicle was not repaired. The manufacturer was informed of the failure and confirmed that the repair was not covered under warranty or recall. The contact became aware of GMC special programs: n252508340 and n25250834, which were associated with the failure; however, the VIN was not included. The manufacturer referred the contact to the NHTSA hotline to report the failure. The failure mileage was approximately 105,000.

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.

I have a 2021 Chevrolet Silverado 1500 with a 3. 0 duramax diesel engine, have had a check engine light intermittent a couple times. Vehicle went into limp mode. Had the diagnostic code read; p1010. Code p1010 shows an engine coolant flow control valve position sensor exceeded minimum learning limit. General motors has issued a special warranty n252508341covering 2021-2023 Silverado 1500 for this part ( lm2 coolant control valve replacement ) with a 15 year and 150,000 mile limit. I took my vehicle to the Chevrolet dealer and they said my VIN number was not covered. It would be a $1900 repair. I have read of numerous other of same vehicles listed under the special warranty, yet gm has excluded these VIN numbers as well. This is a known defect, gm has covered some but not all. Yet many are not covered yet having the same problem. I am not able to reach anyone at gm to talk about this issue. It needs to be addressed.