Three problems related to brake master cylinder have been reported for the 2004 Chevrolet Silverado 1500. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2004 Chevrolet Silverado 1500 based on all problems reported for the 2004 Silverado 1500.
I was driving down the road at 45 mph, when a deer stepped out only 40 yards ahead of me, I applied my brakes and heard a loud pop and my brake pedal went to the floor and had absolutely no brakes. Luckily the deer started to sprint because I missed the deer by only a couple feet. After looking under the hood I found out the master cylinder blew a o-ring. I did some research and it looks like chevy knew about this problem.
While exiting interstate 89 in swanton vermont, I applied the brakes and the pedal went completely to the floor with nearly no braking occurring. There were no warning lights or previous problems. Vehicle was towed to a repair facility. An inspection revealed the brake line burst very close to the master cylinder. The inspection also revealed the entire brake-lines were rusted and corroded beyond any normal wear. The repairman stated that he has seen this on a number of silverado's and that their is obvious problems with the quality of the lines. This vehicle is garage kept and shows no body wear or engine wear.
Complete brake failure. I went to start the pickup truck and when I stepped on the brake pedal it went to the floor. The truck had just been used a few minutes earlier and the brakes worked fine. Due to rust, a brake line burst. I thought with a dual master cylinder I would never loose both front and back brakes at the same time. This was not the case. The brakes do not to stop this vehicle.