2021 Chevrolet Traverse Powertrain (other) Problems

I am filing a safety complaint regarding two vehicles provided through Bob Hook Chevrolet in [XXX] . My Chevrolet Traverse has been at the dealership for approximately one month due to a transmission failure. The vehicle has remained unrepaired during that time. The transmission issue has made the vehicle unreliable and unsafe to operate. While my Traverse was in the shop, the dealership provided me with a Buick Enclave loaner vehicle. On Thursday, while driving the Enclave, the vehicle repeatedly stalled. The entire electrical system shut down, and the power steering failed and locked up. This created a very dangerous situation and made it difficult to safely control the vehicle in traffic. After reporting the breakdown and safety concerns, the dealership’s only solution was to return my Chevrolet Traverse to me even though it had not been repaired. I am concerned about the serious safety risks involving sudden stalling, electrical failure, loss of steering assist, and unresolved transmission problems. I request that these issues be investigated to determine whether defects exist that could endanger other drivers. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11736727

Incident

May 7, 2026

The car sometimes will not accelerate in the 25-35 mph range and will begin to shudder and shake. This can be very dangerous when attempting to merge on a highway. This also happens when completely stopped and and then accelerating. It will shake and shudders until or not accelerate at all forcing you to take your foot off the gas and reapplying pressure slowly or slower than what should be. This shuddering can also happen at higher speeds as well. This will likely cause an accident at some point if this continues.

NHTSA ID

11733348

Incident

Nov 1, 2024

I was driving and without any type of warning the car stopped shifting so I was barely touching the gas but my tac was all the way up.

NHTSA ID

11725385

Incident

Mar 18, 2026

The contact owns a 2021 Chevrolet Traverse. The contact stated that while driving approximately 45 MPH and stopping at a red light, the vehicle accelerated but failed to exceed 20 MPH. The vehicle was taken to a dealer; however, the failure could not be replicated. The contact stated that on another occasion, while stopped and attempting to make a left turn onto a highway at 75 MPH, the vehicle failed to accelerate above 20 MPH. The vehicle was taken to a dealer, where it was diagnosed, and it was determined that the transmission needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was approximately 54,000.

NHTSA ID

11723106

Incident

Jul 1, 2023

Mileage

54,000 mi

The contact owns a 2021 Chevrolet Traverse. The contact stated that while driving at various speeds, the vehicle failed to respond intermittently upon depression of the accelerator pedal. Additionally, the contact stated that the gear shifter failed to respond or responded slowly when releasing the gear shifter button intermittently. The gear shifter was easily moved to a different gear from unintended contact. While accelerating from a complete stop, the vehicle hesitated to respond, jerked, and made an abnormal sound while the RPMs were significantly elevated. The vehicle failed to respond upon shifting to reverse(R), and the gear shifter was sticky. The check engine warning light was illuminated. The vehicle was taken to an independent mechanic, where the contact was informed that there were fault codes found that were related to the transmission. An appointment was scheduled with the dealer for a diagnostic test. The vehicle was not yet diagnosed or repaired. The contact related the failure to an unknown recall. The manufacturer was notified of the failure and referred the contact to the NHTSA Hotline to report the failure. The failure mileage was approximately 137,000.

NHTSA ID

11720133

Incident

Nov 3, 2025

Mileage

137,000 mi

I AM HAVING A LOT OF TRANSMISSION SHUDDER ESPECALLY WHEN ACCELERATING. NOTICED THAT CONSUMER REPORTS STATED IN THEIR MAGAZINE THAT THIS HAS BEEN A BIG PROBLEM FOR AT LEAST 5 YEARS. I DON'T UNDERSTAND WHY NHTSA HAS NOT MADE CHEVROLET DO SOMETHING TO FIX THIS PROBLEM WITH THE TORQUE CONVERTER.

NHTSA ID

11718942

Incident

Feb 1, 2025

I was driving 45 mph on a state route when all of a sudden my drive shaft bolt came completely out and split my drive shaft in two causing me to lose control. No damage at all or rust or anything is visible on the drive shaft. Could have caused a serious injury or worse. I just had a Multi Point Inspection done the day before the incident occurred

NHTSA ID

11709906

Incident

Jan 6, 2026

Shift to park warning comes on every time I put my car into park. I can give the gear shift a hard tap so it can go into park and my car will turn off. I feel like after a period of tapping the great shift it will turn into a bigger problem.

NHTSA ID

11688741

Incident

Sep 18, 2025

Car was late shifting into gear. Taken to dealership and replaced tourque cpnverters for 3800. Car gets fluids checked 4,000 miles later transmition is shot fue to leak from gasket on transmition...

NHTSA ID

11656598

Incident

Apr 21, 2025

The battery wasn't being charged which caused some problems. However, it was the alternator that was bad. Since the battery wasn't being charged and the alternator was failing, there were problems with steering and engine power which almost caused a collision at highway speeds.

NHTSA ID

11637348

Incident

Oct 23, 2024

I bought this 2021 Chevrolet Traverse on January 4th 2021. Since owning this vehicle the transmission has always skipped and sputtered. We have done regular maintenance on it. But at 115,000 miles it seems to get worse and really shift hard or skip while trying to go into each gear. There is no information on maintenance for the transmission other than taking it to the dealership, which is really bizarre and unreasonable because dealerships take to long and some can be without. We have also noticed on a couple different occasions that the reverse lights were on when it was in park. The parking brake also likes to set when someone opens or closes a door. We are not sure what the problem is. But would like this transmission to be fixed.

NHTSA ID

11615762

Incident

Sep 21, 2024

Occasionally when putting the SUV in reverse, the car does not go into gear. I'll hit the gas and nothing and then all of the sudden it goes into gear. It's almost like it's in a delay sometimes I'll have to put into drive and then reverse for it to go into gear.

NHTSA ID

11441316

Incident

Nov 19, 2021

With just 1,085 miles on a new 2021 Chevrolet Traverse RS the 9 speed automatic transmission began to fail. It feels as if it skips and there is a distinct shudder as it shifts in the higher gears. The transmission also appears to labor as the vehicle ascends even the smallest change in grade. Research of these issues shows its a noted prblem with the GM 9 speed automatic transmission.

NHTSA ID

11419811

Incident

May 29, 2021