Chevrolet Tahoe Complaints (2021)

437 consumer complaints on file.

#11747082June 28, 2026
FUEL/PROPULSION SYSTEM
Fuel pump relay module failed, we had the vehicle towed to a mechanic and payed for the repair, a week later we received mail from GM saying the fuel pump relay module was faulty in our model, that we could take it to a dealership and have it repaired, or if we had already had it repaired we would be reimbursed, the dealership refused to reimburse us, and directed us to GM customer service, we sent the required documents in October of last year, received a call from a GM representative to let us know they were reviewing our case about 3 days after sending the information in, we haven’t heard from them since.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11746967June 27, 2026
ENGINE, FUEL/PROPULSION SYSTEM, UNKNOWN OR OTHER
2021 Chevy Tahoe with 6.2 engine (VIN: [XXX]) has been experiencing severe oil consumption, and making odd noises during operation. All while NOTshowing ANY recalls for the issue. Although there's an active recall/investigation into the 6.2 L87 engine, which my vehicle has. I've been having Valvoline document the severe oil consumption during oil changes per manufacturer specs. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11746218June 24, 2026
ENGINE, POWER TRAIN
We have a 2021 Chevy. Tahoe, and we just had an inspection done because a light kept coming on saying that our engine might fail. The shop initially said it needed cam shaft replacement, but now are saying the entire engine needs to be replaced. The care has ~ 67,000 miles on it and is 5 years old.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11745574June 22, 2026
AIR BAGS
I am having a problem with my driver seat airbag which has already been recalled. The recall number is N202310850. When I called Chevrolet they told me since my vehicle vin is not in the recall it wont be fixed even though I am having the same symptoms.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11745515June 21, 2026
UNKNOWN OR OTHER
Panoramic sunroof shattered while sitting parked in a closed garage.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11745295June 19, 2026
POWER TRAIN
Rear end makes noise when turning, been flushed based on current bulletin. Still makes noise but not as bad. Now transmission is jerking at multiple gears
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11743739June 12, 2026
ENGINE AND ENGINE COOLING
The contact's husband owns a 2021 Chevrolet Tahoe. The contact stated that while her husband was driving at an undisclosed speed, the vehicle shuddered and experienced a loss of drive power. A message to turn on the vehicle was displayed. The contact's husband coasted the vehicle to the side of the road and attempted to jumpstart the vehicle, but the vehicle failed to restart. The vehicle was towed to the dealer, who determined that the engine had seized and the crankshaft had failed. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. The contact related the failure to NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling); however, the VIN was not included in the recall. The manufacturer was made aware of the failure and advised the contact to file a complaint with the NHTSA Hotline. The failure mileage was approximately 130,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11743568June 11, 2026
POWER TRAIN
My vehicle would not shift into reverse. Took it into the Chevrolet service and they said the Valve body needs replaced. There are known issues with the Valve body in 2021 Tahoe but they said it is not covered under any of the GM extended warranties. It should be covered under Special Coverage N242454441 or N242454440, but they said no coverage. The vehicle only has 46,200 miles on it
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11743348June 10, 2026
ENGINE
While driving my 2021 Chevrolet Tahoe, the check engine light illuminated. Shortly thereafter, the engine began shaking severely and I heard clicking and popping noises from the engine compartment. The following morning, the vehicle was barely operable, shaking excessively and unable to properly reverse. Due to the unsafe condition, I had the vehicle towed to the dealership. The dealership diagnosed a failure involving all 8 lifters on one side (bank) of the engine, requiring extensive engine repairs. My vehicle has approximately 74,000 miles, which I believe is low mileage for such a significant internal engine failure. The symptoms included severe engine vibration, misfiring, loss of performance, and the potential for loss of power while driving. This is not the first major failure I have experienced with this vehicle. In approximately April 2023, when the vehicle had about 32,000 miles, it unexpectedly shut off while I was reversing in a roadway. The dealership diagnosed a failed fuel pump control module (fuel pump modulator). Similar failures were later identified in recalls and corrective actions affecting other GM vehicles. I am concerned that my vehicle has experienced multiple failures involving components that appear to be associated with known issues affecting GM vehicles, yet my Tahoe was not included in applicable recalls. These failures created significant safety concerns, including unexpected engine shutdown, loss of vehicle operation, and potential loss of power while driving. I respectfully request that NHTSA investigate whether my 2021 Chevrolet Tahoe vehicles should have been included in existing and future safety recalls related to these defects and other known defects that GM vehicles are experiencing with the motor, transmission and other parts. Note: No invoice is available yet as I am seeking GM assistance due to no warranty status. Estimated repair cost from dealership is up to $8,900.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11740788May 29, 2026
ENGINE
My wife was stopped at a stop light traveling west from and appointment. When the light turned green she moved her foot from the brake to gas when all of the warning lights. It happened at the worst time possible during rush hour and we were fortunate that she was not hit by traffic. After the police arrived to help re direct traffic and wait for a tow truck, we found coolant spilling underneath the engine towards the rear of it. Towed to local repair shop, they inspected and found the engine had a catastrophic failure. Likely related to the current recall for the 6.2l V8 engine installed in this Tahoe.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11739913May 25, 2026
POWER TRAIN
Transmission failed. Only warning was check engine light on 10 minutes prior to failure. At 30 mph on city road car was suddenly coasting, engine rpms revved to 7-8k, no driving power available for approximately 30 seconds. 'Drive' reingaged but apparently in limp mode enough to get a few hundred yards more to parking lot. No reverse gear available and warning on dash 'catastrophic failure' imminent. Garage reports the transmission is 'bad' . Awaiting dealership input but 3 weeks before they will look at it .
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11737454May 12, 2026
ENGINE
On May 2nd 2026 I was driving my 2021 Tahoe high country with the 6.2 motor at 60 mph and started to slow down before my left hand turn. In the process of slowing down at about 40mph I heard a loud bang/thud noise. The car had completely shut down all motor related usage. I coasted into the shoulder on the side of the road the vehicle would not restart. I had my children and wife in the car. There were no check engine lights or any other warning signs on the dash prior to this happening. The Tahoe was running perfectly fine. Ended up needing the vehicle towed to the chevrolet dealership. It was confirmed upon dealership inspection by the mechanic that an intake valve spring broke and locked up the engine. We currently are being denied coverage through our extended warranty with endurance to replace the engine.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11737018May 11, 2026
ENGINE, LANE DEPARTURE, SERVICE BRAKES, HYDRAULIC
The contact owns a 2021 Chevrolet Tahoe. The contact stated while driving at an undisclosed speed, the contact stated that several warning lights illuminated. The vehicle was towed to the dealer where it was diagnosed with a failed engine, lane departure modular and the brake master cylinder. The contact was informed that the engine, lane departure modular and the brake master cylinder needed to be replaced. The vehicle was not repaired. The contact was informed that the lane departure module was in back order. The manufacturer was made aware of the failure and a case was filed. The contact was advised to contact the NHTSA Hotline and report the failure. The failure mileage was approximately 78,026.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11736994May 11, 2026
ENGINE
Engine has developed a miss and has check engine code P0300 random misfires. There are subcodes pending of P0011 and P0016 indicating Crank and Cam misalignment. This has all the classic signs for a failing engine. I am taking this truck in for the GM Picoscope test, the oil was changed to 0w40 mobile one supercar oil approx. 2,800 miles ago when the truck was under Powertrain warranty. I will preform a Blackstone oil test to determine if there is abnormal engine wear. My truck is not in the vin. recall range.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11736321May 7, 2026
SERVICE BRAKES
I was driving home after dropping my kids off at school and when I was almost home my dash lit up with the traction control light, check engine light, ABS light, red break light, service ESC message, forward collision system unavailable message and break system failure 62 MPH top speed ( was switching between 43 MPH top speed and 62 MPH top speed ), I went to slow down and I had no brakes at all. The pedal sunk to the floor with zero resistance no matter how many times I pushed it. I live on a dead end road and thank god I had already crossed the major highway before my road because it would have been an incredibly bad accident. I finally got it to switch into neutral to stop and into park where I sat with my foot on the brake in park until someone could come out to me. I called my local dealership whom had it towed to them. My vehicle is a 2021 Tahoe with 23,014 miles at the exact moment this happened. The dealership said it was the master cylinder/brake module which is not covered under the power train warranty I still have. This is a major safety issue and it seems it is not isolated due to a simple google showing reports on other forums of other newer chevy/gms in different models have this same issue with brakes going out while driving.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11736305May 7, 2026
FUEL SYSTEM, GASOLINE
The contact owns a 2021 Chevrolet Tahoe. The contact stated that while driving at approximately 35 MPH, the vehicle began bucking and sputtering, and the check engine warning and then the low fuel warning lights illuminated. The contact existed the highway and while on the exit ramp the vehicle stalled. The vehicle was towed to an independent mechanic where it was diagnosed that the fuel pump needed to be replaced. The contact believes that the failure was associated with NHTSA Campaign Number: 21V739000 (Fuel System, Gasoline). The vehicle was not repaired as of yet. The manufacturer was notified of the failure. The failure mileage was approximately 29,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11735997May 6, 2026
POWER TRAIN
The contact owns a . The contact stated that while driving in reverse a loud popping noise had occurred coming from the engine compartment. Later, while driving up a hill was warning message "Accelerator, Reduced Speed" had displayed and the vehicle was slowly driven home. The contact later discovered that the vehicle also did not operate in reverse. The vehicle was taken to the local mechanic who diagnosed that the transmission valve body was faulty and needed to be replaced. The vehicle was not yet repaired. The local dealer and manufacturer were notified of the failure but no assistance was offered.. The failure mileage was 85,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11734900April 30, 2026
ENGINE, UNKNOWN OR OTHER, FUEL/PROPULSION SYSTEM
Check engine light illuminated on my 2021 Chevrolet Tahoe. Upon diagnostic scan, the following emissions-related fault codes were present: P11D5 (NOx sensor), P14D9 (NOx sensor), P2383 (EGR pressure sensor), and P2C7A (NOx catalytic converter efficiency). All components are available for inspection upon request. The vehicle was taken to an authorized Chevrolet dealership for diagnosis. The dealer acknowledged the emissions codes but stated that unrelated components would need to be repaired at owner expense before the emissions system would be addressed, despite these codes falling within the federally mandated 8-year/80,000-mile emissions warranty. The fault codes were confirmed by the dealership. No safety incident has occurred to date, however degraded NOx and EGR function can result in increased harmful emissions output and potential engine performance issues. Warning lamps appeared without prior incident or symptom. The manufacturer has not offered to cover the emissions components under the federal emissions warranty without the owner first paying for additional repairs that may or may not be causally related to the emissions system failure. When the dealer was directly asked, "Are you saying the emissions system itself is functioning correctly, and something else caused these codes to appear?" — the dealer did not provide an answer. This question was asked in order to clarify whether the emissions components themselves are degraded or failed, which would confirm warranty coverage eligibility. The dealer's failure to answer this question directly is noted as part of this complaint.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11734758April 30, 2026
ENGINE AND ENGINE COOLING
The contact owns a 2021 Chevrolet Tahoe. The contact stated that while driving 65 MPH, there was an abnormal vibration coming from the engine compartment and felt in the steering wheel. The check oil warning light illuminated. The vehicle was taken to the residence and then to the dealer, where it was determined that the vehicle was functioning properly, and there was no oil leak; however, the oil level was low even though an oil change was not yet due. The dealer added oil to the vehicle, and an oil consumption test was ordered. The manufacturer was notified of the failure and a complaint was filed. The vehicle was not repaired. The failure mileage was approximately 48,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11734312April 28, 2026
ENGINE
Urgent: Engine Failure Following Recent Service – 2021 Chevrolet Tahoe To Whom It May Concern, I am writing to formally request assistance and an investigation regarding a serious engine failure involving my 2021 Chevrolet Tahoe. In July 2025, I paid out of pocket to have the lifters and camshaft replaced on this vehicle. More recently, while traveling, the vehicle broke down and was taken to Uebelhor Chevrolet, where the valve body in the transmission was replaced. After picking the vehicle up from Uebelhor Chevrolet, the vehicle broke down again approximately one hour later while in Henderson, Kentucky. At that time, the engine began smoking, running rough, and misfiring. I checked the oil level during the incident and found it to be extremely low on the dipstick (I have photographic evidence of this condition). The vehicle had to be towed to Kate Faupel Chevrolet for further inspection. I was then informed that the engine has a dropped lifter on cylinder #8 and possible camshaft damage. Given the following factors: Recent out-of-pocket lifter and camshaft replacement (July 2025) Immediate failure shortly after leaving a Chevrolet dealership Extremely low oil level observed at the time of breakdown (with photo documentation) Diagnosis consistent with potential oil starvation and internal engine damage I am requesting that General Motors conduct a full review of this situation to determine responsibility. This raises serious concerns about a potential defect, improper prior repair, or a service-related issue that resulted in catastrophic engine damage. At this time, I am not authorizing repairs until liability is determined. I am requesting: A formal case review and investigation Assistance with repair or full engine replacement Guidance on how this situation will be resolved This incident created a significant safety concern, as the vehicle became disabled shortly after leaving a dealership during travel. Please contact me as soon as possible to discuss next steps
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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