2026 GMC Acadia owner complaints

What component or system failed or malfunctioned, and is it available for inspection upon request? Horn began sounding unexpectedly and intermittently while driving and parked. How was your safety or the safety of others put at risk? The uncontrollable horn startled surrounding motorists and pedestrians, causing confusion and defensive reactions. While removing the fuse temporarily stopped the noise, it eliminated a critical safety feature. The horn remains inoperable as of 4/6/26. Has the problem been reproduced or confirmed by a dealer or independent service center? GMC Dealership. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? GMC Dealership. Were there any warning lamps, messages or other symptoms of the problem prior

My wife and child drove the car to the grocery store and parked the car l. When she returned to leave , the car would not start and flashed a warning with key fob not detected and some kind of security light warning. The instrument cluster told her to place the key in left console cup holder to crank the vehicle . This did not work either .I drove the second key fob to her to determine if it was a key fob issue and the 2 nd key did not work as well. Called dealership and service requested the car being towed. Tow truck didn’t feel comfortable with the removing the vehicle as it was sitting due to space in the parking lot. They dispatched a small tow truck , but in the meantime I disconnected the battery cable and waited about 15 min. The car cranked and I immediately drove it to dealershi

Blind spot monitor goes off for everything. Engine has chirping noise. Brand new

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 cause of the failure was not yet determined. The manufacturer was notified of the failure. The fail

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 we’ve had people behind us which created dangerous situation and there’s 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 what’s happening with other GMC’s or or any GM product.