WHEN APPLYING BRAKES SUDDENLY TO AVOID HITTING ANOTHER VEHICLE, BRAKE LINE RUPTURED CAUSING LOSS OF BRAKES. WAS ABLE TO APPLY EMERGENCY BRAKE BEFORE RUNNING OFF ROAD. TOOK TRUCK TO MEINEKE DEALER AND HAD RUPTURED BRAKE LINE REPLACED AND ALL OTHERS INSPECTED. MECHANIC REPORTED RUPTURED BRAKE LINE WAS SEVERELY CORRODED. *TR