THE BRAKE LINES ON MY 2001 CHEVROLET 2500HD HAVE COMPLETELY RUSTED OUT. I WAS BACKING OUT OF MY DRIVE WAY IN REVERSE AND WENT TO STEP ON THE BRAKE AN THE PEDAL WENT TO THE FLOOR. I ROLLED TO THE END OF MY DRIVEWAY, ACROSS THE STREET AND THROUGH MY NEIGHBOR'S FENCE. MY EMERGENCY BRAKE ONLY SLOWED MY SPEED IN REVERSE AND DID NOT STOP ME. THE BRAKE LINE ON THE DRIVER SIDE REAR IS RUSTED THROUGH AND BROKEN OFF AT THE FLANGE AT THE REAR WHEEL. INSPECTION SHOWS ALL OF THE BRAKE LINES ARE SEVERELY CORRODED AND WILL NEED TO BE REPLACED. I AM LUCKY THIS FAILURE DID NOT HAPPEN AT A MAJOR INTERSECTION OR IN AN EMERGENCY STOP SITUATION ON THE HIGHWAY. *TR