NHTSA Complaint #11417374 — 2004 CHEVROLET SILVERADO 1500

Vehicle was being driven when "Service Brake System" appeared in the DIC. Vehicle was safely returned to owners home where it was discovered a master cylinder failure had occurred. The master cylinder contained no brake fluid, the booster was covered in brake fluid, and fluid was dripping from the undercarriage to the ground. The master cylinder and booster were replaced. In the process of bleeding the brake lines, a secondary leak was discovered in the brake line to the left front caliper. An inspection revealed a failure of the brake line due to rust. Inspection of the other brake lines revealed rust which will require replacement of all the brake lines. In this instance, the vehicle was actively being repaired when the failure of the brake line occurred. Had the brake line not failed during the repair process of the master cylinder and booster, a failure would have occurred while the vehicle was being operated possibly resulting in a crash with injury or death to the occupants or other drivers.