The contact owns a 2012 Chevrolet Traverse. The contact stated while driving 80 MPH, the vehicle stopped abruptly. The check engine, traction control, stability control, and air conditioner warning lights were illuminated. Additionally, while driving 75 MPH, the vehicle unintendedly decelerated. The contact was concerned about driving the vehicle. The vehicle was towed to an independent mechanic who determined the failure was due to the throttle body. The vehicle was repaired. The vehicle was taken to the local dealer, who was unable to determine the cause of the failure. The throttle body was previously replaced, but the failure recurred. The manufacturer was contacted, but no assistance was provided. The failure mileage was approximately 120,000.