TL*THE CONTACT OWNS A 1999 DODGE RAM 3500. THE CONTACT STATED THAT WHILE DRIVING UPHILL PULLING A TOW TRAILER, THE VEHICLE BEGAN TO STALL. THE CONTACT ATTEMPTED TO APPLY THE BRAKES BUT THEY FAILED TO OPERATE. THE VEHICLE ROLLED BACKWARD AND THE TOW TRAILER JACK KNIFED. THERE WERE NO INJURIES. THE CONTACT WAS THEN ABLE TO RESTART THE VEHICLE AND CONTINUED DRIVING. THE VEHICLE HAD NOT BEEN INSPECTED OR REPAIRED. THE FAILURE MILEAGE WAS 90,000. THE VIN WAS UNAVAILABLE.