2018 GMC Acadia brakes problems

Tl* the contact rented a 2018 GMC acadia. While the contact's friend was driving 40 MPH, the engine revved and the vehicle accelerated on its own. The brakes failed to stop the vehicle. As a result, the vehicle drove through a partition and crashed into a brick wall. The air bags deployed. All four occupants in the vehicle were injured and received medical attention. The contact suffered chest pain, another occupant sustained a cut on the head, and the other two occupants suffered fractures.

While getting an oil change at my GMC dealer they discovered that a rear brake pad was separating from the back metal plate it was attached. They said it was a serious safety issue. They said it was a manufacturing issue and not the result of wear. The dealer said the car should not be driven. They did not have the repair parts so I took it to tuffy muffler who fixed it. They confirmed it was due to a manufacturing issue.