Brake Master Cylinder problems of the 2004 Chevrolet 1500

Another 2004 Chevrolet silverado 1500 ext. Cab brake line rupture. The line broke under the cab by the drivers door, and this left me with absolutely no brakes. General motors claims there will still be limited braking force, not so! I was stopping at a crosswalk pedestrian crossing and I started to stop, reduced speed to about 10 mph and the brake pedal went right to the floor, there was no braking force left at all. I went through the cross walk and stopped with the parking brake down the street. I had to steer into the other lane to avoid the pedestrian and another car. I live in atlantic canada, similar climate to new england, I just though I would add my incident to your file as this issue needs to be address by gm, I am also informing transport canada, and gm canada. We all know brake lines corrode, but the braking system should have a redundancy, this is the issue with these vehicles the master cylinder does not work this way. We have annual safety inspections in new brunswick, canada and this was done at the gm dealership in March, 2014, the vehicle was also in the gm dealership in sept. , 2014 for an oil change and the brake line broke a few weeks later. I realize this is an american association, but a lot of canadian cars are on your roads, I am adding this incident to the failure list, the truck was built in texas. I crawled under the truck after this incident and the brake lines are all rusted out and need replacement before this truck is safe to be on the road. I am sure there all lots of these brakes lines ready to fail on these trucks.

Dropped vehicle off at my mechanic's shop complaining about rubbing noise from driver's side front wheel (I told him it sounded like disc pad rubbing on rotor & was present even when the brake pedal was depressed. ) he took vehicle for test ride to duplicate & locate the noise. While on the highway test drive he applied the brakes & a brake line failed dumping fluid on highway. Upon inspection back at his shop he found all four brake lines rusted & in need of replacement. He replaced all brake lines from master cylinder to abs unit & from abs unit to all calipers. He also replenished brake fluid & bled the brake lines after the new brake lines were installed.

Applied brakes and had no braking at all luckily was able to coast into a parking lot with out incident. Had it towed to a repair shop where we learned all brake lines were rusted and needed to be replaced from master cylinder to abs module and from abs module to front and rear wheels. I live in wisconsin we salt roads, with all the safety regulations how can they use a cheap corrosive material on a very important vehicle part? I know they make s. S. Brake lines. I had just come off of a 65mph highway if they had failed then, I may not be writing this.

I was driving home from an erran and when I slowed down to make a turn I noticed the brake pedal went down more than useall. I continued to travel home and when I stopped for an intersection the pedal went all the way to floor, but still stopped the vihicle so I carefully continued home and parked in my garage. When I came back out latter to have a look I noticed brake fluid all over the garage floor. I opened the hood and seen two brake lines all corroded and one had burst right nest to left front wheel under the master cylinder. I had the vehicle towed to a repair shop and they replaced two sections of brake lines and was told this was a common problem on siverado trucks, but no knon recalls.

Leaving a parking lot, I attempted to brake at the stop sign. The brakes initially worked, then the pedal quickly went to the floor. I began pumping the brakes, but the vehicle rolled out into the street. I swerved to the right, and another vehicle coming from the left swerved left to avoid an accident. I backed into the parking lot and tested the brakes. Each time I applied the brakes, the brakes would engage a minimal amount, but the pedal would very quickly go to the floor. Without constant pumping, the brakes would not engage at all. Upon further investigation, I found the brake lines under the hood severely corroded, and a significant leak from a line directly below the master cylinder. My mechanic replaced all the brake lines except the two running to the back brakes. Contrary to what gm advertises, this brakeline rupture resulted in a complete failure of both front and rear brakes. In older systems, the front and rear brakes were operated from two completely separate hydraulic systems. I understand that newer braking systems use some type of metering valve between front and rear brakes. It is clear to me that this system does not work as expected. This is a significant issue, and I am fortunate that this did not result in a severe accident. Three factors prevented an accident. My slow speed, my ability to swerve to the right, the other drivers ability to swerve to the left. Without all three, a severe accident would have occurred.

The truck's brakes unexpectedly failed while attempting to take an exit ramp from a major highway onto city streets. The brake lines from master cylinder to the rear and front brakes were all corroded with brake fluid gushing from the system with each pedal depression. This was a serious life-threatening event. We were traveling with our family in the truck at the highway speed of 65 mph when the incident occurred. If it had been daylight hours with more traffic, we could quite easily hit another vehicle as the truck's stopping capability became non-existent. We've paid more than $2000. 00 to have all the lines, hoses, bleeders, fittings replaced. Every piece of tubing was corroded. This should not have occurred in a vehicle with only 53k miles on it. Please investigate, and if reimbursement is possible we would appreciate it.

Owner was driving on a major highway when another vehicle pulled onto the highway from the shoulder. During the emergency stop the brakes began to fail, and completely failed at the conclusion of the stop, with the brake pedal going to the floor. Although there was no resulting accident, the potential for a serious accident was very prevalent. Upon inspection, brake fluid was found dripping from the frame rail just below the master cylinder and brake block area. The brake lines had rusted to the point of failure where the lines was mounted to the frame and held in place by plastic retaining clips. . On additional inspection, the other brake hardlines were found to be rusted as well. The only viable fix would seem to be a total replacement of the existing lines, to prevent concatenated failures.