2024 GMC Acadia problems

Filed Nov 3, 2026 · Brakes, Electrical · NY · crash

On [xxx], I remote-started my 2024 GMC Acadia. With the driver-side door and rear passenger-side door left completely open, I stepped inside the vehicle, placed my foot firmly on the brake pedal, and pressed the engine Push-to-Start button to transition the vehicle from remote-start mode to operational drive mode. Immediately after pressing the button, I took my foot off the brake pedal and exited the vehicle. A second later as I was walking toward the back of my vehicle, without any driver intervention or manual gear selection, the electronic shift-by-wire transmission uncommandedly engaged completely into REVERSE on its own. The vehicle began actively driving backward. Despite the driver-side door being wide open and no driver being present in the seat or belted, and the rear passenger side door open, the vehicle's electronic 'Auto-Park' system and automated emergency braking failsafes completely failed to engage or shift the vehicle back into Park to prevent a rollaway. The uncommanded vehicle movement forced me to chase after the moving vehicle to regain control, posing an imminent and severe risk of property damage, catastrophic bodily injury, or death. The rear open door got stuck on our hose container and fire pit on the side of the house, and ripped the door off the hinges. The vehicle has been towed to Matthews GMC in Vestal, NY for diagnostic evaluation. GM Corporate Case #[XXX] has been opened. I am filing this complaint because an uncommanded transmission engagement combined with a total failure of the vehicle's electronic safety override systems represents a critical, life-threatening manufacturing and software defect that requires immediate investigation. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Sep 28, 2026 · Lights · PA

On September 26th, 2026 I got a random notification about needing to get my rear left turn signal checked out as it still functions but blinks rapidly. Today, September 28th, 2026, I visited my local dealership for the issue and was informed that they had received a bulletin regarding the concern but that instead of covering the defect tied to a "software anomaly", I was told it would be around $600 to replace. I feel this is a strong enough safety issue that should be considered for a recall as this is a widespread problem and should be covered by GM.

Filed Sep 24, 2026 · Body · MO

Well, let’s try this again. The first try disappeared. The rear hatch seal on the vehicle has identical spots on both sides of the hatch that are mashed flat. I think this is being caused by the flat spots on the hatch itself. The vehicle is a total body and engine redesign. The flat spots allow for dust intrusion into the cabin all the way to the front of the cabin. We live on a gravel road, so we can see the intrusion, albeit it took a while to figure out where it was coming from. People in town won’t know. I videoed the seal and hatch the day before it was replaced by the dealership. My fear is that someone on a trip may get into trouble, because you know if dust can get in, carbon monoxide can as well. I’ll include the video. Thank you for reading.

Filed Sep 22, 2026 · Driver assistance, Engine · OK

Today, on [XXX] outside of Sapulpa Oklahoma, while in the inside lane of three southbound lanes, cruise control on at 80mph. The car suddenly reduced power, air conditioning stopped, assisted power brakes stopped working, gauge cluster full of flashing warnings. Pulled to the right shoulder, stopped with difficulty. Had to pump and stand on brakes to get stopped. Shut off engine, then restated and everything stated working again. Scary situation in heavy traffic. Lucky to be alive!! INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Sep 17, 2026 · Brakes · AL · crash

When backing into my driveway the brakes failed. I was nosing the car across the street towards the neighbors driveway so I could put the car in reverse and back it into the driveway. I applied the brakes while traveling at about 3-4mph when the brakes had little resistance and went straight to the floor and the vehicle continued moving forward. Attempted to apply brakes again and the same result. Ended up hitting the neighbors parked car in their driveway. Luckily it was a very low rate of speed so there was minimal damage and nobody was hurt. There were no warning lights present before, during, or after the incident. The vehicle got towed to a local GMC dealership who could not replicate the issue. Insurance is still looking into the issue.

Filed Sep 17, 2026 · Brakes · AL · crash

When backing into my driveway the brakes failed. I was nosing the car across the street towards the neighbors driveway so I could put the car in reverse and back it into the driveway. I applied the brakes while traveling at about 3-4mph when the brakes had little resistance and went straight to the floor and the vehicle continued moving forward. Attempted to apply brakes again and the same result. Ended up hitting the neighbors parked car in their driveway. Luckily it was a very low rate of speed so there was minimal damage and nobody was hurt. There were no warning lights present before, during, or after the incident. The vehicle got towed to a local GMC dealership who could not replicate the issue. Insurance is still looking into the issue.

Filed Sep 17, 2026 · Steering · 47,000 miles · IL · 1 injury

The contact owns a 2024 GMC Acadia. The contact stated that after an oil change, while starting the vehicle, the steering wheel became inoperable. The contact became aware that the top of the steering wheel was cracked and had popped out of place. The contact stated that while driving, the failure caused a cut on the hand. The vehicle was taken to the dealer, where the failure was confirmed. The contact was informed that the steering wheel needed to be replaced. The dealer referred the contact to the manufacturer for assistance, and a case was opened. The contact believed the failure might be related to the leather on the steering wheel, which had deteriorated due the changes in the weather. The contact was concerned that the damaged steering wheel posed a safety risk while operating the vehicle. The failure mileage was approximately 47,000

Filed Jul 13, 2026 · Seat belts · IL

2024 GMC Acadia grounded at dealership for 3+ weeks due to unavailable driver seat belt buckle (Part 26522477), rendering a brand-new vehicle legally un-driveable due to primary restraint part constraints. The buckle will not latch, causing the seat belt to be rendered inoperable. The problem was reproduced by the dealership, and the replacement part is backordered.

Filed Jun 22, 2026 · Brakes · TX

At low speeds the brakes squeal horrendously. We have taken the vehicle to the dealer multiple times and each time they state that the brakes are fine. A vehicle with this low of miles should not have squealing brakes since new.

Filed May 28, 2026 · Driver assistance · 17,500 miles · PA

The contact owns a 2024 GMC Acadia. The contact stated that while back out of his driveway while in reverse(R), the contact hit another vehicle that was also parked in the driveway. The contact stated that back over prevention sensor failed to alert him that a vehicle was in his vicinity; also the vehicle did not apply the automatic braking system when closely approaching vehicle. The contact stated that the failure cause significant damage to both vehicles involved in the collision. The vehicle had yet to be diagnosed or repaired for the failure. The dealer nor the manufacturer had yet to be notified of the failure. The failure mileage was approximately 17,500.