Eight problems related to brake fluid leak have been reported for the 2001 GMC Sierra. The most recently reported issues are listed below.
Brake pedal moved all the way to floor with no apparent hydraulic pressure which failed to engage brakes when shifting into drive. Inspection of brake lines beneath drivers side door revealed excessive rust and a hole in steel brake line leaking fluid.
Brake pedal went to flood, had difficulty stopping truck, leaking brake fluid.
The contact owns a 2001 GMC Sierra. The contact stated that the brake pedal became stuck to the floor board while attempting to depress the brakes. The contact was able to stop the vehicle with an abnormal increase in stopping distance. The contact inspected the vehicle and found that the rear brake line was leaking fluid due to corrosion. The manufacturer was not made aware of the failure. The vehicle was not repaired. The failure and current mileage was 115,000.
Was driving on highway and was approaching a red traffic light. Pushed down on brake pedal which when all the way down to the floor. I immediately down shifted the transmission from "d" to "3" and after slowing down to around 35 mph, down shifted to "1" slowed down more and then shifted to "2". At that point, I was approaching a car ahead of me, waiting at the red light, and I began slowly applying the parking brake and finally came to a stop, narrowly missing the car in front of me. After pulling off the side of the road, I looked under the truck and determined that brake fluid was leaking from a brake line located in the area under the driver's seat location.
I lost my brakes while pulling out onto the road. Pedal went to the floor before truck began to slow down, abs kicked on and grinding rotors before a full stop. Brake line failed leaking fluid under driver's side door - most likely due to rust.
Backed out of driveway and brake pedal felt soft. Got to end of street and suspecting a problem began slowing early. Brake pedal went to the floor with very little pressure and very little stopping power. Went back to house and found a large puddle of brake fluid where the truck had been sitting. Opened the hood to look at brake reservoir and found it empty but also realized all hard brake lines in view were heavily corroded and crusted. Leak was from burst hard line below driver. All hard lines are heavily crusted and corroded near the point of failure if not already failed. Some fuel lines also corroded.
The contact owns a 2001 GMC Sierra. The contact stated that while reversing from a residential driveway, she the brakes failed and brake fluid leaked from the vehicle abnormally. The vehicle was taken to the dealer who stated that they needed to replace the brake lines. The vehicle was repaired. The manufacturer was contacted and stated there were no recalls for the vehicle. The failure mileage was 88,000 and the current mileage was 100,005. The VIN was not available.
The contact owns a 2001 GMC Sierra. The contact stated that while driving 20 mph, the brake pedal depressed to the floor. The vehicle was coasted to the side of the road and the contact noticed that there was a brake fluid leak. The vehicle was then towed to an automotive shop, where they cut off the rotten portion of the brake line and repaired it. The brake failure occurred a total of three times. The dealer did not diagnose the failure, but a private mechanic repaired the brake lines. The failure mileage was 130,000 and the current mileage was 145,000.