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Acceleration & cruise control

2021 GMC Acadia Acceleration problems

Owners have filed 7 complaints about the 2021 GMC Acadia's acceleration & cruise control with NHTSA - 4% of all its complaints, most recently on January 9, 2026. They describe 2 crashes, 0 fires and 0 injuries. Unintended acceleration, surging, throttle problems and cruise or adaptive cruise faults.

Complaints
7
Recalls
0
Crashes
2
Fires
0
Injuries
0
Deaths
0

Acceleration complaints

Electrical systemAcceleration & cruise control

The electronic dashboard goes black while driving. I was driving to work on the highway at highway speeds and the entire electronic dashboard went black including the hud display and the radio screen. The radio screen turned back on and auto reconnected to my phone and android auto. I was able to safely get to an exit and park, turn off the car and restart and the dash did come back on to then go black about 5 minutes later this time the hud stayed on and I was able to get to work where the car sat off for 8 hrs ,...

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when leaving work the dash stayed on. The radio screen would turn off randomly and unable to connect to a programmed cell phone via Bluetooth or data cable. I brought the vehicle in for a service and this issue plus the concern of the transmission shuddering. The dealership found the problem and both the dashboard and radio needed service updates and both were charged to fix. A service update should not be charged for the dash as you have no speedometer when it goes out. There was no warning or alert that the dash or radio needed an update.

Filed Incident Electrical system · Vehicle speed controlNHTSA 11709819
SteeringAcceleration & cruise controlEngine & cooling

For the 3rd time of ownership the cooling fan stays on after vehicle is turned off and the display "steering assist is reduced, drive with caution".

Filed Incident Steering · Vehicle speed control · EngineNHTSA 11701173
Acceleration & cruise controlBrakes

The Vacuum pump on my 2021 GMC Acadia failed causing my breaks malfunction. This Problem was confirmed by a certified mechanic that repaired it. this is in conjunction with the NHTSA recall issued under N192268490.

Filed Incident Vehicle speed control · Unknown or other · Service brakesNHTSA 11670283
SteeringAcceleration & cruise control

The contact owns a 2021 GMC Acadia. The contact stated while driving 50 MPH, the vehicle suddenly decelerated to 35 MPH. The vehicle stalled, and the "Steering Assistance Reduced" message was displayed. The vehicle was restarted. The vehicle was taken to the local dealer the following day, where it was diagnosed that the accelerator pedal and terminal connector were bent. The dealer retrieved DTC codes: P2138, and P2122. The vehicle was repaired. The manufacturer was notified of the failure. The approximate failure mileage was 27,792.

Filed Incident Steering · Vehicle speed controlNHTSA 11616263
BrakesAcceleration & cruise controlCrash

As I was stopped in line behind a car at the ATM, my foot slipped from the brake, I quickly placed it back only to find that I ended up going forward. I quickly moved my foot more to the left for the brake only to end up going forward even faster hitting the car in front of me. I then put my left foot firmly on the brake. Now with both feet on the brake the car is climbing up the car in front of me and not braking. Finally, I put it in park and cut the engine. The whole front end of my car is crushed. Now 5...

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days earlier my husband had a similar incident when he was parking the car and thankfully only hitting the curb. Looking at the brake pedal you will find that there is a rubber edge hanging down on the right side. IF YOUR FOOT SLIPS BELOW IT while crossing from the accelerator going right to left, YOU WILL NOT hit the brake but will continue to press the accelerator. In fact, if you raise your foot upward, you will only raise the brake. The only way to get to the brake is to get out from under it by going toward the accelerator and then back to the left. This action does not work in an emergency! I believe this rubber edge is too large is a safety hazard. We are still in the process of assessment by insurance, body shop and GMC.

Filed Incident Service brakes · Vehicle speed controlNHTSA 11481608
Acceleration & cruise controlFuel system

Brand new vehicle purchased from dealer, at 8900 miles transmission slipped. Dealer has for 2 hours and couldn't find problem, but replaced transmission fluid it was dark. At 9000 it happened again, they have vehicle and said the new transmission fluid is dark and muddy. Only 100 miles, so they determined they need to take apart transmission and see what happened. It's a 52k car, it should not be repairs, it should be replaced under warranty. Video of 8900 from dealership https://video.37483.net/timeline/2CJTHEW6

Filed Incident Vehicle speed control · Unknown or other · Fuel / propulsion systemNHTSA 11450038
Acceleration & cruise controlCrash

The contact owns a 2021 GMC Acadia. The contact stated that while his wife was reversing the vehicle, the accelerator pedal was stuck to the floorboard and the vehicle crashed into the garage wall. No medical attention was received. No police report was filed. The dealer was made aware of the failure and informed the contact to tow the vehicle to their location to diagnose the failure. The vehicle was awaiting a tow truck and had not been diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 2,500.

Filed Incident Vehicle speed controlNHTSA 11427862

GMC Acadia acceleration complaints by year

Acadia acceleration problems, every year

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Source: U.S. National Highway Traffic Safety Administration (NHTSA) complaints and recalls, checked . Complaints are owners' own reports and are not verified. How we use the data

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