Two problems related to brakes failed have been reported for the 1999 GMC Sierra 1500. The most recently reported issues are listed below.
Was driving to the dump and the brakes failed. . Pedal went all the way to the floor. Almost crashed but was able to stop with emergency brake. Brake fluid was poring out from under drivers seat.
1999 GMC sierra truck had complete brake failure causing me to hit the car in front of me at a stop light. No indications of brake problems and when attempting to slow for the light, the brake pedal went to the floor.