Brake Fluid Leak Problems of GMC Sierra 3500

The contact owns a 2006 GMC Sierra 3500. While the vehicle was stationary, the power steering fluid leaked into the braking system and caused the brakes to seize. The vehicle was repaired and all of the hoses affected by the brake fluid were replaced. The contact stated that this was the third time the vehicle was repaired for the same failure. The manufacturer was made aware of the failure. The failure mileage was 161,108.

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Tl the contact owns a 2007 GMC Sierra 3500. While driving approximately 20-30 mph, the brake pedal was depressed, but failed to slow down or stop the vehicle. The contact was able to pull into a fuel station and engaged the parking brake to stop the vehicle. The contact inspected the vehicle and noticed brake fluid pouring from the brake lines underneath the vehicle. The contact stated that the brake lines were completely rusted through. The vehicle was taken to casey's frontier Chevrolet (located at 2350 cookeville hwy, livingston, TN 38570, (931) 563-9076) and repaired. However, when the brake pedal was depressed, the vehicle would stop as intended, but the brake pedal would travel to the floorboard. The manufacturer was not contacted. The failure mileage was 106,000.

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Stopping in driveway. Brake pedal went to the floor without resistance. After vehicle stopped observed fluid leak under front driver side aft of front tire. Inspected engine compartment and observed severely corroded brake lives and brake fluid in engine compartment. Brake line apparently corroded and ruptured resulting in brake failure.

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Brakes failed due to a sudden brake line failure. There had been no prior fluid leaks. The rear metal brake line under the bed rusted at a clamp in front of the fuel tank. As I have looked further into this I have several friends that have had this problem and several shops said that they saw this often with these vehicles all failing in the same area.

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On highway multi-lane, heavy traffic ahead, suddenly slowed and a lot of lane changing going on as some debris was ejected from truck onto roadway. Applied brakes, application had little effect. Stood on the brakes, butt out of the seat standing on the brakes, truck veered off to right severely while ant lock pulsed. Fortunately traffic got out of the way and escaped harm. Exited highway inspected vehicle. Upon exiting the truck found puddle of brake fluid on ground under driver¿s seat. Brake lines leaking. Sever rust throughout the brake system. Replacement of all brake lines required. This was very close to crash, only the rapid reflexes of the guy next to me averted an accident. Note, repair shop tells me that (and has shown me) all the brake lines must be replaced. As the lines enter a distribution box ( anti-lock anti-skid under the driver¿s seat) and the clamping devices all had significant rust to the point of failure.

This morning I noticed the brake pedal traveling down further than normal and little to no stopping power. Once arriving at work I tried to pump the brake pedal and it kept going to the floor. Upon looking under the truck I discovered a puddle of brake fluid. After further inspection I found one of brake lines had rusted through and blown out in front of the abs module. The general condition of all the brake lines in this area is very rusty. I will likely have to replace all the brake lines due to this.

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Steel brake pipe that carries fluid to the rear brakes ruptured next to the fuel tank. Fluid is leaking and pooling on the flange of frame. Stopping performance is degraded, and no warning has registered via the instrument cluster or idiot lights. Line is badly corroded, which perhaps is to be expected given the age of the vehicle. However, I find it ironic that the exhaust system is made of stainless steel yet the brake lines are not. This vehicle has had other brake-related failures that gm refused to correct, despite having recalled contemporary vehicles with identical problems. It is an unusual build - old (gmt400)bodystyle, model year 2000, 1 ton crew cab longbox. I believe gm forgot they built these and thus they neglect to include trucks of this type in their prior recalls. Registering this complaint in hopes that gm will remember to include such trucks in the ongoing pe over the brake pipe corrosion issue.

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