Brake Hoses, Lines/piping, And Fittings problems of the 2003 GMC Yukon - part 2

The brake lines on the entire vehicle were found to be severely rusted after the rear lines burst while attempting to stop from 25 mph.

Brake line failure due to corrosion.

Rusted brake lines caused immediate loss with no warning. Loss of brakes were catastrophic with only emergency brakes available. Car came to a controlled stop on median but could of been much worse given no other vehicles in the vicinity.

Brakes failed while stopping at cross walk. Cause of failure was rotted brake lines.

I was driving home at night after getting gas in the middle of the gas shortage during the major snow storm in the north eastern united states. As I was approaching a light I pressed on the brakes and it went straight to the floor. I then brought it to a mechanic and when it was placed on a lift they noticed the entire bottom of the car was rusted including the brake lines. They ended up replacing the entire brake line system due to excessive rust.

Approaching a traffic light at 35 mph, without warning the brake pedal went to the floor. I could not slow the car down very much and went through a very yellow light. Fortunately the car waiting at the light had not entered the intersection. The a brake line routed above the frame blew apart losing brake fluid every time I pumped the brakes. No pressure to operate the rear brakes. The break occurred at a rusted location.

Brake line burst while under a hard braking scenario. Further inspection revealed all lines under and up to the proportioning valve are all rotting to the point of needing to be replaced.

The contact owns a 2003 GMC Yukon denali. The contact stated that while driving 20 mph, she attempted to brake but the vehicle did not brake. The contact had to remove her foot from the brake pedal to stop the vehicle. The failure occurred without warning. The vehicle was then towed to the dealer. The dealer stated that they needed to replace the brake lines. The vehicle was not repaired. The manufacturer was not contacted. The failure and current mileages were 120,000.

I was leaving my driveway when the brake pedal on my GMC Yukon blew out. The line had rusted thorough. This occurred in 2012. Since then as a gm technician I have seen and heard of customers, friends and neighbors with gm trucks have their brake lines blow out from rust. Gm has a real issue which should be investigated. The brakes lines on their truck models tend to rust out. Gm has not issued a recall but offered a new brake line kit. My question to you is why? I have not seen this issue on the same model year gm cars. As far as I know no one has died as a result but there has to have been injuries. Is it not your job to investigate this issue? once again why?.

Brake lines under drivers seat are completely rusted through. Vehicle is garage kept and seems to be experiencing excessive rust on brake lines. While driving vehicle brake pedal went to the floor almost causing me to have an accident. My family and I own and have owned numerous gm products and we're very disappointed with this safety hazard not being addressed by gm. Maybe it's time to shop elsewhere. . .

The brake lines have corroded and rotted out. The first failure was located in the lines under the driverside firewall. I am informed that this is a common problem and that the lines are difficult to replace due to their location.

While traveling on I-75 north at the I-4 exit I brake to slow down for stopped traffic ahead and the brake pedal worked for a brief moment before quickly loosing all pressure and going to the floor. All braking power was lost immediately and I barely avoided an accident by swerving off the road to avoid the stopped traffic in my lane. Upon initial inspection it became obvious that the brake line had ruptured behind the front driver side wheel. The lines are all heavily corroded and rusted, thereby becoming brittle and failing under pressure.

As a was approaching an intersection I applied my brakes only to feel them drop to the floor. After pulling off to the side of the road and inspecting my engine compartment I found that there was brake fluid all over. I managed to limp the vehicle to a repair facility which notified me that my brake lines all were rust and badly needed to be replaced. They stated that a vehicle of this age it is not common for this to happen.

The contact owns a 2003 GMC Yukon. The contact was driving approximately 25 mph and the brake pedal depressed to the floor when engaged. There were numerous attempts at braking, but the vehicle continued to accelerate. In order to come to a complete stop the gear selector was shifted into neutral. The vehicle was towed to an independent mechanic for inspection. The mechanic stated that the brake lines were completely rusted. The vehicle was then towed to an authorized dealer for a second opinion. The vehicle exceeded the service warranty mileage and had not been repaired. The manufacturer was notified of the failure. The contact planned to have the vehicle repaired at some point. The approximate failure mileage was 112,000.

2003 GMC Yukon xl 2500 sudden brake failure. While decelerating to enter a residential driveway, brake failure occurred. Due to low speed (<20 mph) at the time, I was able to stop the vehicle using the parking brake. Had this occurred moments earlier while decelerating from the freeway into a busy intersection, there could have been fatalities. While stopping, smoke was seen coming from the front and left wheel well of the vehicle. After stopping, I examined the vehicle and found the metal brake line had ruptured where it crosses over the frame rail leading to the front left brake. There was brake fluid sprayed around the left side of the engine bay, and the exhaust header was still smoking. Luckily the exhaust header temperature was low enough to avoid ignition of the brake fluid and initiation of fire. A large portion of brake fluid in the master brake reservoir had leaked out leaving a trail of fluid behind the vehicle along the left side. An extreme level of corrosion and flaking metal was evident along all the metal brakes lines from front to rear. Incidentally, the power steering lines were in similar condition. The brake line wall thickness in the rupture area was so thin that it could be bent and crushed with pressure applied by thumbnail. The vehicle is now at the local GMC dealership for repairs. Based on the consistent and excessive corrosion throughout, I opted to have all the brake lines and power steering lines replaced at once. Brakes are the most safety critical device on a moving vehicle and must be held to higher standards than almost any other component. The condition of the brake lines and rupture of a brake line is unacceptable for a vehicle of this year and mileage. I recently sold a 1994 suburban that had brake lines in much better condition than this 2003 Yukon. Clearly there is a manufacturing or quality defect in the lines installed on this 2003 Yukon. I respectfully request NHTSA to review brake line defects on behalf of all owners.

I was backing the vehicle into the garage. While maneuvering back and forth I step on the brake petal to shift back to forward. The vehicle stopped then the petal went to the floor board abruptly. The vehicle moved and stuck the house. The rear brake line had split open at the abs braking valve. All of the brake lines at the valve were severely rotted. Had to replace all the steel lines to make the vehicle safe.

Wife was driving truck at approx 30 mph when dic illuminated with service brake system message. She then pressed the pedal and it went to the floor. She was able to maneuver the vehicle which would not stop from hitting anything/anyone. Only after pumping the pedal did the truck stop. Upon inspection the brake lines have rotted/corroded along the drivers side frame rail. If this would have happened at highway speeds, someone could have been killed. The vehicle is parked now, and has not been repaired as of yet.

Complete brake failure while traveling in car over a bridge in new york city. I had been routinely driving the car for about 15 minutes prior to the incident. When I went to apply the brakes in traffic, my foot depressed the brake pedal and it traveled to the floor. Repeated attempts to brake caused the same to occur. Nearly missed a major rear end collision with the car in front of me and possible injuries by dropping the transmission into the lowest gear and slamming on the parking brake. Dealer says my entire brake lines are corroded and need to be replaced.

No brake pedal all brake lines are rusted out replaced all brake lines.

I have a 2003 GMC Yukon denali with approximately 12k miles when the brake lines corroded and caused brake failure. No accident,no injuries . It seems like the whole undercarriage is corroding. Vehicle was taken out of service to be repaired. Seems to be a safety issue of importance.

The contact owns a 2003 GMC Yukon denali. While the contact was driving approximately 30 mph on wet road conditions; approaching a traffic stop light, the brake pedal traveled to the floor with pressure applied. The vehicle failed to slow down and crashed into a pole. The contact sustained injuries to the head and body. There was no mention of a police report filed for the incident. The insurance company did not investigate the failure. The contact stated the defect was related to a manufacturer investigation action number pe10010 (service brakes, hydraulic: power assist: hydraulic: hoses, lines/piping, and fittings). The vehicle was repaired for the malfunction. The failure mileage was 15,000. The current mileage was 70,005. The VIN was unavailable.