TL - THE CONTACT OWNS A 2003 CHEVROLET SILVERADO 2500 HD. THE CONTACT STATED THAT WHILE REVERSING, THE BRAKE PEDAL ABNORMALLY TRAVELED TO THE FLOORBOARD WHEN DEPRESSED. ON A SECOND OCCASION, WHILE DRIVING APPROXIMATELY 20 MPH, THE BRAKE PEDAL ABNORMALLY TRAVELED TO THE FLOORBOARD WHEN DEPRESSED AND AS A RESULT, THE VEHICLE CRASHED INTO A TREE. A POLICE REPORT WAS NOT FILED. THERE WERE NO INJURIES REPORTED. THE CONTACT INSPECTED THE VEHICLE AND NOTICED THAT THE BRAKE LINES WERE RUSTED AND CORRODED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE VEHICLE WAS REPAIRED BUT THE FAILURE RECURRED. THE APPROXIMATE FAILURE MILEAGE WAS 60,000 AND THE CURRENT MILEAGE WAS 90,000. PM