*Median odometer reading when the problem happened, where owners gave one. One complaint can name several problem areas.
Unknown or other
While driving on interstate 95, the sunroof exploded. Was not close to an overpass or other structure.
Oct 16, 2026Electrical system
The contact owned a 2026 GMC Acadia. The contact stated that there were software updates perform on the vehicle and the vehicle experienced issues with a module failure with reading the information downloaded. The vehicle was taken to the dealer, where technicians restarted and successfully corrected the module for that specific update. However, a much larger software update failed to download or update properly. The manufacturer was notified of the failure. The dealer was notified of the failure. The contact stated that there have been many failures with the software updates. The dealer confirm the failure and the repair was pending. The failure mileage was 900.
Aug 1, 2026 · 900 milesService brakesCrash
Purchased NEW 2026 GMC Acadia on XXX XXX - Fastened seat belts, Started vehicle in a driveway, Switched into forward gear and Vehicle lurched forward while Depressing the brake with no braking action occurring (BRAKE PEDAL WENT TO THE FLOOR). Shut off engine and depressed the Emergency Brake Button to stop the vehicle. Vehicle struck another vehicle upon stopping causing several thousand dollars damage. XXX - Notified [XXX]/[XXX] the dealer, no help. Called GM and filed a Case #XXX. Vehicle inspected by GM on XXX. No response forthcoming from GM or the dealer yet after 6 weeks since the incident. XXX - Called for a wrecker to have vehicle towed to the dealer where it was purchased. While…
Aug 11, 2026Power train
Vehicle ran out of fuel and became disabled in an active roadway/exit ramp. The vehicle retained 12-volt electrical power and the dashboard and electronic controls remained operational. With the brake pedal depressed and the ignition/electrical system on, I attempted to shift the transmission from Park to Neutral so the vehicle could be pushed out of traffic. The vehicle repeatedly displayed âConditions Not Correct for Shiftâ and remained locked in Park because the engine was not running. There appears to be no driver-accessible mechanical/manual override that allows the transmission to be placed in Neutral when the engine cannot run. As a result, a disabled vehicle with functioning…
Sep 3, 2026Unknown or other
Engine has a noise (chirp) when vehicle delivered. Found out after purchase that a known problem was present in the engine compartment that engineering has been unable to identify. Bulletin #PIP6045B (Oct20,2025) Document ID:7006702 With the engine failures General Motors have had I have concerned about operating. A failure could result in danger to the occupants.
Apr 22, 2026Engine
Blind spot monitor goes off for everything. Engine has chirping noise. Brand new
Jun 3, 2026Air bagsCrash2 injuries
The contact owns a 2026 GMC Acadia. The contact stated that while at a stop sign and depressing the brake pedal, the vehicle unintendedly accelerated and crashed into the rear passenger's side of a Semi Truck. Both the AEB and the IAEB failed to engage during the incident. The vehicle sustained severe front-end damage. The contact stated that the air bags failed to deploy, and the Forward Collision Avoidance System failed to engage to prevent the crash. The driver sustained a neck and right shoulder injury. The front passenger seat occupant sustained a right arm and left leg injury, and a headache. No medical treatment was received. A police report was filed. The vehicle was towed away. The…
Jun 2, 2026 · 4,700 milesForward collision avoidance › Automatic emergency braking
On several occasions, this vehicle break pretty hard for no apparent reason in a red rectangle with a crash symbol came up on the windshield a few times weâve had people behind us which created dangerous situation and thereâs no apparent reasons for this vehicle breaking there was nothing in front of us at times there were vehicles in the other lane, but at other times there were no vehicles around at all I was wondering if this whatâs happening with other GMCâs or or any GM product.
Apr 11, 2026
Owner complaints are submitted to NHTSA by the public and are not verified. Shown as filed (NHTSA removes personal details); long reports are shortened.