2021 GMC ACADIA Complaints

Electronic parking brake is setting itself without you doing it even when parked on a completely flat surface. Voice activated assist is going off while driving down the road without you hitting the steering wheel button. 1st dealer I took the car to refused to even address issue because the car didn’t throw a code even though the parking break issue happened while in their parking lot. 2nd dealer at this point has had the car for a total of 16 days. They tried to tell me the parking break was normal, manager at actual dealership told me it definitely was not normal, and they don’t know what to do about voice activation going off. It has now been at dealerships 3 times for this issue within Oct and Nov 2021. Only 4,500 miles on car. If it is having these electric issues already what is in store for this car in the future? My husband has a video on YouTube of voice activated assist issue so far 2 other people are saying their cars are having the same issue.

My 2021 Acadia just stooped working as COMPLETLY SHUT OFF. I had no power to contact OnStar or more importantly to put my 4 ways(Hazard lights) on to signal or warn other motorists that there is a problem ahead. I could not push the vehicle as it is locked in gear because of the termination of power. I have had this exact problem happen 3 times leaving me and my family stranded on a busy road with nothing working. On each occasion I have removed my family from the vehicle in fear of being rear-ended! This would not only cause an accident with harm or fatality to my family, but has put that same risk to other motorists on the road. When I have had the vehicle in the dealership (Champion Buick/GMC of Brighton) in which it needs to be towed, they have not been able to find or confirm this issue. The dealership has had the vehicle for multiple weeks with help and assistance of GM with also no resolution. This is a very intermittent issue and when it happens it is an extremely dangerous situation. The vehicle gives no warning except for a total shut down.

The contact owns a 2021 GMC Acadia. The contact stated while stopped at a stop light and depressing the brake pedal, the engine revved up with the RPM’s increasing up to 15,000. No warning lights were illuminated. The contact stated that the vehicle jerked and vibrated as the transmission did a hard shift. The vehicle was taken to the dealer who took the vehicle on a 24-minute test drive and no failure was found. The vehicle was taken to the dealer several times and no failure was able to be determined. The failure occurred several times. The manufacturer was notified of the failure however, no assistance was offered. The approximate failure mileage was 249.

On at least 3 occasions, my vehicle’s locks have malfunctioned and I’ve been locked out of my car with one incident being locked out in the rain. Upon approaching my vehicle and using the unlock button on the outside of my door, I was unable to access my vehicle. Then trying my key fob and app to unlock, with all attempts unsuccessful. The back hatch of the vehicle would open, so my daughter had to crawl through to manually open the door. Once the vehicle was started, once put in drive, the vehicle would not lock. As stated, I can confirm three dates this has happened and that I’ve contacted my local dealer. I am pretty sure it’s happened one other time but I can not remember the date. The dealer would only look at it once and could not find anything wrong because the problem did not happen in the short time my vehicle was there. I do have video of at least one instance that I can provide.

Brakes grind, usually after sitting overnight. It has happened on multiple occasions.

The contact owns a 2021 GMC Acadia. The contact stated while driving approximately 65-70 MPH, the driver’s side rear spring detached and almost caused a collision. The dealer was made aware of the failure and it was arranged for the vehicle to be towed to the dealer for diagnosis. The contact stated that the vehicle was towed to the dealer prior to the failure after the contact heard an abnormal noise coming from the rear of the vehicle. However, the dealer could not replicate the failure and the vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 12,000.

Since purchase of this vehicle in Dec 2020, the rear camera vision has been intermittent. I originally thought it to be driver problem however I am now told that there is a module that needs to be replaced and it is not available and possibly not being manufactured at the present time. As a result the entire Camera parking assist system is completely out of service with no information on when the module may be available to repair the issue. I believe this may be a Safety issue as backing up into traffic be it parking lots or roadways, this equipment is an essential addition to safety to other vehicles and pedestrians.

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.

As I was driving down Interstate 65 in south Alabama on a drizzling rainy day, the sunroof made a very loud popping noise and then exploded, with shattered glass falling into my SUV. Luckily, I was able to keep my vehicle on the road without swerving and losing control. I closed the sunshade on the sunroof to keep the glass from continuing to fall in and drove home. There was no warning lights nor any indication that something was wrong with the sunroof. When I got home, I called the nearest GMC dealership in Pensacola, Florida to report the issue (850.637.8973). Jonathan Sparks handled the claim. He sent out team members to pick up the vehicle from my home. They first removed as much of the glass as they could to keep it from flying off and possibly hitting another vehicle behind them. They drove it to Pensacola, replaced the entire sunroof, and then brought it back to me. Documentation and pictures are attached.

Was on the interstate driving when the emergency brake engaged causing the car skid the tires and almost completely coming to a stop in heavy traffic. Shortly after this the transmission had issues which caused the car to be undrivable and had to be towed. The dealership had the car for over a month and replaced the TCM. There were no other warnings prior to this.