Chevrolet Silverado Complaints (2021)

989 consumer complaints on file.

#11757759August 18, 2026
POWER TRAIN
Shuddering at 25 to 50 mph, harsh shifts, hesitation.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11757276August 16, 2026
ELECTRICAL SYSTEM
The key will not release from the ignition when in park. This is all over the internet as a very big problem. People are bypassing the ignition interlock so they don’t have to leave the vehicle unattended with the key in the ignition inviting theft. Therefore while driving the ignition could be cut off and the key can come out. This is a huge safety issue. This will kill people.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11756532August 12, 2026
AIR BAGS, SERVICE BRAKES, SEAT BELTS
Turned from [XXX] into my street, about 9 houses down, i could not brake or turn steering wheel. Ended up hitting 2 cars, the problem was that the air bags did not deploy and the seat belt did not lock. truck was totalled. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Crash:
Yes
Fire:
No
Injuries:
0
Deaths:
0
#11755936August 10, 2026
ENGINE AND ENGINE COOLING, ENGINE
The contact owns a 2021 Chevrolet Silverado 1500. The contact stated that while driving at an undisclosed speed, the check engine warning light illuminated and the messages "Engine Power Reduced" and "Speed Limited to 65 MPH" were displayed. The vehicle was taken to a dealer, where it was diagnosed and determined that the engine coolant flow control valve and related components needed to be replaced. The vehicle was not repaired. The contact associated the failure with NHTSA Action Number: EA25007 (Engine, Engine and Engine Cooling). The manufacturer was notified of the failure and referred the contact to the NHTSA Hotline for assistance. The failure mileage was approximately 95,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11755329August 6, 2026
POWER TRAIN, ENGINE, FUEL/PROPULSION SYSTEM
On August 22, 2025 the malfunction indicator lamp (code: P146B Evap. purge pump) illuminated with no noticeable change. Ran codes at auto zone which stated engine failed and emissions not ready. August 25, 2025 drove to certified Chevy dealer dropped off vehicle and showed the service advisor the fix finder test results from auto zone as well as the illuminated indicator lamp (check engine light). August 26, 2025 picked up my vehicle with receipt stating "found dtc's P146b and P1467 stored in ECM (engine control module) for evap purge pump fault. inspected evap canister for any signs of fuel and none were found. replaced evap purge pump per special policy #N232395310. Cleared dtc and road tested vehicle to verify repair". September 9, 2025 my engine indicator light illuminated and my engine entered limp mode, a safety feature which reduces cylinder output/capacity. September 12, 2025 while in limp mode, I returned to the service dealer and informed them of the reduced power (limp mode) and my confusion as the second engine symbol that has been illuminated is in a different area than the first and my truck has ONE engine. (editor note: malfunction indicator lamp is for the emissions). My original transmission (8L90) was replace, because my vehicle was under power train warranty and the service advisor took it upon himself to approve the disassembly of my running, in good condition 8L90 transmission without consulting me or my approval. the 8L90 was "discontinued" for the 2020-2022 years without recall come to find out (sarcasm). I now have a new transmission (8L86-85) with the "special coverage" part (#N232395310) still connected, only now I have NO additional powertrain coverage for a new transmission, but the "special coverage" originally issued in 2023, BY MAIL, for 15 yr/150,000miles has extended two years plus mileage. (15 yr / 152,955) .The "special coverage" part should NOT affect the engine! Engines produce power/HEAT not CO2 . Sarbane - Oxley Act.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11754700August 4, 2026
POWER TRAIN
The contact owns a 2021 Chevrolet Silverado 1500. The contact stated that while driving at an undisclosed speed, the accelerator pedal was depressed; however, the vehicle failed to accelerate as intended. The contact stated that there was an abnormal sound coming from the vehicle and the vehicle was jerking erratically. The contact stated that the transmission was shifting hard, and the vehicle drove abnormally rough. No warning lights were illuminated. The vehicle was taken to the dealer; however, the failure was not duplicated. The failure was persistent. The manufacturer was not made aware of the failure. The failure mileage was approximately 49,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11754540August 3, 2026
ENGINE, POWER TRAIN
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.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11754554August 3, 2026
ENGINE AND ENGINE COOLING
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.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11753677July 30, 2026
ENGINE, POWER TRAIN
On or around XXX a my 2021 Silverado started making a rattling sound from the engine. The truck began to stall and the engine shut off three times while driving. I attached scanner the next day and the track showed P00011 and P00016 codes. Those codes are for the Camshaft Sensor and the Crankshaft Sensor. I went online and did research about the two codes and discovered there had been a couple recalls for these codes concerning my year model truck: (Recall Number 25V-274; GM: Campain N252494000). NHTSA Engineering Analysis EA25007 or RQ26001 I spoke with the Dealer I purchased vehicle from (Lynn Layton Chevrolet - Decatur, Al)and they said they will not begin repairs until they receive payment from GM or myself. I then spoke with Tyler at GM Corporate Customer Service. He said my VIN was not included in the GM Campaign|Recall. I asked why not because it is a 2021 Silverado and I’m having the exact same problems as vehicles included in the recall. He said because they checked their system and the parts used on my truck were from a different manufacturer than those included on the recall. I said that shouldn’t matter because my truck is having the same exact problems. I asked him to check and see if GM would be able to provide financial assistance to have motor repaired or replaced. Tyler told me that GM will not do repairs - they will only replace the engine. He said GM would not provide any financial assistance because my truck has 170k plus miles on it. I informed Him that I had previously taken my truck to Lynn Layton Chevrolet about these symptoms and it was diagnosed as transmission/torque converter problem. They changed transmission fluid and charged me ~$700. I then asked if GM would authorize a “Goodwill Replacement”. He said they would not. I called Lynn Layton Decatur back and asked how much would engine and reps if I have to pay for it. They said 10k -12k A local mechanic said he will fix for $6,000. Please help me get this resolved. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11753288July 28, 2026
POWER TRAIN
The contact owns a 2021 Chevrolet Silverado 1500. The contact stated that while driving approximately 30 - 60 MPH, the transmission failed to shift properly, and the vehicle hesitated while depressing the accelerator pedal. A dealer was contacted. The vehicle was taken to the dealer to be diagnosed, and the contact was informed that the valve body needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure and referred the contact to the NHTSA Hotline to report the failure. The approximate failure mileage was 105,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11752784July 25, 2026
ENGINE
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.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11752540July 23, 2026
ENGINE
Catastrophic engine failure. Confirmed by GM dealer. No symptoms prior.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11752101July 22, 2026
ENGINE
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.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11752212July 22, 2026
ENGINE
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.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11752243July 22, 2026
POWER TRAIN
My 10L1000 transmission had a catastrophic failure internally which caused it to rough shift, sudden down shifting, not want to shift into gear at all, and high engine rpm prior to roughly shifting. I took it to the Chevy dealers mechanic the very next business day, only to find out that from the mechanic that this is a common occurrence with Chevy transmissions in my truck and google also verified this to be a common problem. The mechanic from the Chevy dealership also stated that there was larger metal chunks than normal. My truck is available for inspection asap. The manufacturer and vin lookup contradicts the mechanic and google stating no issues or recalls for my transmission. After speaking with the manufacturer, I became highly concerned due to their unwillingness to address the obvious issues known by so many. If I wasn’t such a safe driver and immediately brought it to the mechanic, this could have caused a terrible accident leading to extreme bodily harm or death even. According to a quick google search of the 2021 Chevy 2500 transmission problems and my mechanic this is a well known problem even though Chevy manufacturers refuse to acknowledge the issue or implement a recall. There was zero warning lights or lamps to indicate this problem. I am extremely concerned with the manufacturer’s response to my concerns and their unwillingness to correct this issue before it cost someone their life. This catastrophic failure with the transmission having metal shavings throughout it and extreme damage to the transmission valve body and being well known and reported by many other customers has to be addressed. Chevy’s unwillingness to acknowledge people’s claims in this has left me with around $10,000 in monetary damages and could have lead to bodily harm or death if I would have been traveling on a main highway or interstate when it occurred. At the very least Chevy needs to be held responsible for this known and reported issue before it causes death or injury.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11751352July 19, 2026
ENGINE
On June 22, 2026, my Chevy Silverado was inoperable and had to be towed to the Chevy dealership. After a period of examination by the service staff, it was deemed to have experienced CATASTROPHIC ENGINE FAILURE. My truck has the 6.2L engine, but was NOT included in the original recall. It had just been serviced on 6/19/2026 and was only driven approx. 20 miles to my home. I have a video of what it was doing when I went to leave for work two days later on 6/22 when it wouldn't run without major issues and a burning smell.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11751121July 17, 2026
ENGINE AND ENGINE COOLING
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.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11750749July 16, 2026
ENGINE
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
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11750803July 16, 2026
POWER TRAIN
Transmission needs to be replaced at 77000 miles!! A KNOWN problem with this make/model/year and NOTHING is being done!!!!!!!!!!!!!!!!
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11750813July 16, 2026
TIRES, TIRES:TREAD/BELT
Wrangler Trailrunner AT LT275/65R20 were on the truck when I purchased my new 2021 Chevy 2500. I only have 25K miles on it. I was driving on the interstate and the tread came off the tire tore my wheel base apart and damaged back of truck along with scratches on the side by wheel also tore wheel trim off.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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