Two problems related to service brakes have been reported for the 2003 GMC C2500. The most recently reported issues are listed below.
Driving down driveway brake pedal went to floor ran into snow bank unable to stop.
When the consumer made a stop, he noticed the trailer brakes did not work. The consumer then received a notice in the mail regarding the wiring harness in which GMC had switched two of the wires on the truck at the factory. The consumer purchased a new brake controller because it burned up .