Brake Master Cylinder problems of the 2003 Chevrolet Suburban

Six problems related to brake master cylinder have been reported for the 2003 Chevrolet Suburban. The most recently reported issues are listed below.

1 Brake Master Cylinder problem

Failure Date: 03/24/2016

I have a very hard time stopping the vehicle suddenly. Pedal will go all the way to the floor. Abs never activates because wheels will not even attempt to lock up. (except in snow or ice) when sitting still pedal will push entirely to the floor. Have replaced all brakes and rotors and front calipers and master cylinder. Seems to have all the symtoms of campaign number 04v045000, but when I enter my VIN number, that recall does not come up. I rearended someone about a year ago ( no damage) since then I make sure to leave about 150 feet between me and the car in front of me.

2 Brake Master Cylinder problem

Failure Date: 09/01/2014

One of the metal brake lines between the master cylinder and the abs modulator valve ruptured during a stop due to corrosion. All brake lines in the vehicle have similar levels of corrosion near the area the aforementioned line ruptured, and at various other locations on the vehicle. The transmission cooler lines had failed approximately 18 months previously due to corrosion. The corrosion and rust on many components beneath the vehicle and in the engine compartment is becoming rather concerning.

3 Brake Master Cylinder problem

Failure Date: 12/18/2013

Brake pedal went to the floor and car would not stop. Had to use the parking break and run into the curb to stop. Found there was no fluid so filled the master cylinder and pumped brakes. Fluid was running out of the line just under the driver's door. I inspected all the brake lines and found them severely corroded and will now replace them all. The last time I had to change a steel brake line was on a 1952 Buick, but that was in 1984, when the car was 32 years old. There should be either a recall or at least a notice from Chevrolet that this could happen. I could have easily wrecked my truck and/or killed a pedestrian.

4 Brake Master Cylinder problem

Failure Date: 11/26/2012

Brake pedal almost to floor, extremely long time to stop. No warning just driving in columbus traffic and lost brakes. Found master cylinder almost empty. Brake lines rusted through left side drivers floor/frame rail area. Dealer estimate $1200 to$1600. Seems to be a common problem as on line investigation verifies. Web site shows open case,no re-call to repair.

5 Brake Master Cylinder problem

Failure Date: 03/15/2012

One of the brake lines from the master cylinder to the abs control unit ruptured due to severe corrosion, resulting in severe loss of brake fluid, and near complete loss of braking force. Replaced both lines on the advice of my mechanic who stated that the other line was just as badly corroded. Subsequently, the brake line from the abs control unit to the rear brakes failed due to severe corrosion in December of 2012, resulting in complete loss of rear brake effectiveness. Replaced that portion of brake system, and very concerned about the remainder of the original equipment brake lines still extant.

6 Brake Master Cylinder problem

Failure Date: 11/17/2011

While driving at 45 mph on a medium traffic city road, the brakes were applied while stopping for a traffic light that had turned red. The brake pedal did not respond quickly enough and had depressed all the way to the floor. The vehicle was able to slow down enough to be driven into an empty parking lot. As I got the vehicle to stop, I opened the engine compartment and saw the brake fluid level was very low. The vehicle had its preventative maintenance done on it just three weeks prior and all fluids were checked topped off (all of which is documented by an oil and lube garage). I was able to get the vehicle back to my home and had inspected the issue. An area along the frame rail were the brake lines go from the master cylinder to the abs motor was leaking. The brake lines were severely corroded in just one area, inspection of the rest of the brake lines were ok. Its just odd that it was corroded in just the one area and nowhere else. There was no warning that the brakes were about to fail or any indication that the fluid level was low.




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