11 problems related to brake fluid leak have been reported for the 2003 GMC Sierra. The most recently reported issues are listed below.
As I stated pulling out of my parking space. I pressed down on the brake pedal and it went to the floor. I quickly put it in park. Then checked under the truck to find brake fluid leaking all over. The line had rusted apart.
Driving aprox. 40 mph applied brakes, brakes were soft. Reapplied brakes and brake pedel went to floor. Lucky to get off the road prior to stopped traffic. Pulled into parking lot & discovered brake fluid dripping and all over the underneath of vehicle both front & rear area. Inspected the brake fluid reservoir to find it empty. Inspection by my repair shop discovered several lines had rusted thru and leaked the fluid out. I was fortunate that I did not rear end any vehicles in front of me and lucky that I was not on a fast moving express way & needed to stop.
Backing out of a parking space I applied the brakes and the pedal went to the floor. I hit a steel pole causing damage to my rear bumper. I was pretty sure I knew what was wrong. I inspected the truck and found brake fluid dripping from under the vehicle in the area of the drivers door. Further inspection showed the brake lines were very rusted which I attribute to the brake line failure.
When exiting the toll road, I applied brakes to slow down. It appeared we were going to roll thru the gate, I let off the brake, and then the car in front of me re-applied her brake. And when I re-applied my brakes, they went to the floor. No warning, no warning lights - the truck did not stop. I hit the car infront of me. Luckily I wasn't traveling at a high rate of speed, as nobody was hurt. After the incident, I noticed all the brake fluid had leaked out, and then my service lights came on. Had to be towed home and there I discovered that my brake lines had disintegrated - totally rusted out. I'm at the conclusion that the brake line wall was so thin, that when I applied the brakes the last time, the pressure blew out the line. No secondary line function. Yes, all lines appear to be totally rusted out. Truck is originally from ohio, I live in texas. I see that this is an ongoing problem in chevy/GMC trucks. And I am facing an outrageous repair bill. As a single parent of 3, 2 of which are teenage drivers, I'm not able to come up with the funds to repair. I'm so glad my kids weren't driving it at the time. I am trying to get gm to honor the brake line repair for $500 that I have seen on a couple of tv station action reports. No luck so far. Thank god my kids weren't driving, and thank god I wasn't traveling at higher speeds - where someone may have been seriously hurt.
Driving my 2003 GMC Sierra at about 60mph I had to decelerate at an exit with a sharp turn and the brake pedal went to the floor. Luckily I was able to swerve around already stopped traffic while using the e-brake to stop. Pulled to the side of the road and saw the brake fluid pouring from the rear brake line beneath the drivers position. I see on the internet that this is a recurring problem reported many times with this model year vehicle. I also see the NHTSA has previously investigated these failures but no recalls?? I've seen that the gm response is that the vehicle should still stop even with the broken line. Not acceptable. Shouldn't ever happen, if quality parts were used including stainless steel. I've seen many cars in the past with at least twice the age and twice the mileage that never had the problem. Could there be a defect is a small amount of instances. . . . . Sure, but not this frequently. This is a design flaw and should be addressed. Amazing!.
As I entered my driveway I applied the brake and the peddal felt very soft. When I got out of the vehicle I notice fluid leaking from the driver side wheel. Opened the hood and could see where the brake line had rusted through. All of the brake lines are totally rusted. Vehicle is unsafe!.
Stepped on the brake and started the engine - brake failed and went to the floor. The driver was able to drive the 2 miles home but had trouble stopping not knowing there was an issue. When they reached their home they noticed fluid leaking out from the undercarriage under the drivers side door. Further investigation revealed that all the brake lines (supposedly stainless) had severely rusted and one of the lines had ruptured due to rusting through. It also appears that rusting is affecting the fuel lines and oil cooler as well as the frame. Vehicle has been to the GMC dealer for regular maintenance/inspections over it's lifetime and 2 - 3 times over the past year for service with no mention of the severe rusting. The only discussion was that the oil cooler would need to be replaced soon as if it was a routine maintenance item.
Entered parked truck in personal driveway. Applied brakes prior to stating and petal went to the floor with no warning. Opened hood and noticed big puddle of brake fluid in driveway. Added more brake fluid only to see it leak right back out on the ground. Contacted repair station, had truck towed. I was notified by the repair station that there was severe brake line rust and they could only complete a partial repair at a local area of the broken brakeline due to the major cost involved!.
Was coming up on a single lane bridge . When I started to brake my foot went to the floor. Lucky for me I did not have any oncoming traffic, and drove over the bridge safely. I then noticed check brake system sign on dash board. Pulled over and there was brake fluid dripping from the drivers side around gas tank area. The line was corroded and burst.
I was driving down my street and tried to stop at the stop sign. The brake pedal started to stop the vehicle and then suddenly went straight to the floor. I drove the one block back to my house and parked the vehicle. I observed a large puddle of brake fluid under the drivers door. Upon inspection, I saw a bundle of rusty brake tubes running down the frame rail of the truck. I had the truck towed to my mechanic.
The contact owns a 2003 GMC Sierra 1500. The contact stated that the front and rear brakes failed and would not respond when depressed. The contact examined the vehicle and discovered that the brake lines were corroded and leaking brake fluid. The vehicle was not repaired and the manufacturer was not made aware of the failure. The VIN was not available. The failure and the current mileage was 108,000.