2015, GMC, Acadia SLT. Rear brake calipers had to be replaced out of my pocket after rear brake calipers froze and locked the brakes in the middle of traffic. This almost caused a major accident in which lives may have been lost or severe injury sustained. The rear brake calipers were inspected by a mechanic. ABS, Traction Control and Stabiltrak warning lights illuminated. Had to have the vehicle towed four times due to rear brakes seizing. Vehicle was sold to me by Posner Park Chrysler, Highway 27, Davenport, FL who did not fulfill the promised repairs and lied to BBB but researching their submitted Used Car Inspection Sheet, they destroyed the rear brake calipers when installing rear rotors and pads and never did install the passenger side fog light assembly as promised after they claimed they had ordered it and held up vehicle delivery until the evening before my departure from Florida back to New York. They were deliver the vehicle by 11:30 am, August 17, 2021 but I did not drive away with it until 5:00pm, the clock-out time for all mechanics in Florida.

- New York, NY, USA

Ist time-car stationary-started car and it started shaking-tractionary control warning came on-turned car off-waited a few minutes and turned it on and it was fine -the next day after driviing 250 miles it happened again after stopping for a toll booth-the car shut down with the same warning-after two tries it started and we drove to a Chevrolet dealer and they replaced the throttle body

- South Lyon, MI, USA

The contact owns a 2015 GMC Acadia. While driving various speeds, the vehicle experienced unintended acceleration and the contact had to exert excessive pressure to the brake pedal. The contact then heard an abnormal noise coming from the front of the vehicle. The contact stated that the vehicle independently disengaged and slowed down. There were no warning indicators illuminated. The vehicle was not diagnosed or repaired. The manufacturer was notified and made arrangements to have the vehicle towed to a dealer. The failure mileage was 35,021.

- Billerica, MA, USA

Left vehicle parked on incline with parking brake set. Returned to vehicle, started engine, released parking brake, put vehicle in drive. The gear indicator on the dash showed the car was in drive. The gear selector in center console indicated it was in drive. Stepping on gas responded with only increased RPM. Vehicle began to roll rapidly in reverse. The power steering and power brakes were not working (almost like it was in park). The vehicle was nearly uncontrollable and almost resulted in severe injury as a couple and their dog were walking behind vehicle on sidewalk at time of incident. After exerting a significant amount of force on the brak pedal the vehicle stopped. I applied the parking brake and shifted to park. Shifted back to drive with the same result rolling back further nearly hitting a brick mailbox. I then put th car in park and turned it off restarted and shifted back to drive, the vehicle then performed as expected. Very fortunate this incid T was not a deadly accident. This same problem exhibited itself on level ground on w previous occasion but was dismissed as an isolated incident, but it has happened multiple times now.

- Hendersonville, TN, USA