DT*: THE CONTACT STATED WHILE DRIVING AT VARIOUS SPEEDS, THE VEHICLE STALLS WITHOUT WARNING. THE VEHICLE RESTARTS EACH TIME. THIS PROBLEM CAUSED AN ACCIDENT, WHILE IN REVERSE THE VEHICLE STALLED AND THE BRAKES DID NOT RESPOND. THIS CAUSED THE VEHICLE TO COLLIDE WITH ANOTHER VEHICLE. THERE WAS DAMAGE TO BOTH THE REAR END OF THE CONTACT'S VEHICLE AND THE FRONT END OF THE OTHER VEHICLE. THE DEALERSHIP IS UNABLE TO DIAGNOSE A PROBLEM.