Brake Master Cylinder problems of the 2004 Chevrolet Silverado

After checking the underside of my 04 Silverado 1500 4x4 for a fuel filter( which it doesn't have) I noticed the brake lines to be severly corroaded. Most of the worst areas were in the bends around the frame from the master cylinder and along the frame.

Driving a well maintained two wheel drive 2004 Chevrolet Silverado 2500 crew cab pickup at 30 mph on a suburban roadway. I applied hard braking and pedal went to floor. I was able to shift automatic transmission to low 1 and apply e-brake to stop before crash. Examination of steel brake lines from master cylinder to the abs module under the drivers floor showed excessive corrosion as reason for failure. The lines that were specifically affected travel over driver side frame rail and are out of sight for routine visual inspection. This vehicle operated in the "salt belt" (new england) and road spray from the left front tire directly impacts this area. After replacing all steel lines with stainless lines (over $500. 00 in parts & labor) the brake system worked as designed.

I was driving along the interstate and traffic abruptly stopped in front of me. When pressed on the brake pedal, I slowed down a little, but then the pedal went to the floor, and I rear-ended the car in front of me. After the police report was filed, I got it to a chevy dealer and they said that one of the steel brake lines from the master cylinder to the front passenger side was rusted and had burst, spilling all of the brake fluid. The wreck damaged the front passenger side bumper, and broke the grille and the headlight support bracket.

I came to a stop in my drive way when my brake pedal went completely to the floor. I knew right away what had happened. I blew my main brake line that exits the master cylinder. I inspected the brake lines and realized they were all corroded very badly. I have never had brake lines corrode on me so badly in such a short period of time. The vehicle is only a 2004 Silverado,it is not that old in my opinion. I have had several vehicles,and have never had a brake line rust the way my Silverado has. I am very fortunate that the vehicle was not at a high rate of speed when this occured,I could of seriously hurt myself or someone else on the road,or even killed someone due to this. For what it is worth,it seems that 99-06 chevy Silverados have a lot of complaints in regards to rusted through and complete failure of the brake lines. Sincerely, scott mullen.

I was exiting freeway and applied brakes to slow down. Pedal went to floor. Luckily I got slowed enoughtostop. Called dealer and had vehicle towed. They replaced two brake lines from master cylinder prop. Valve tobrake pressure mod. Valve. Bad design on this vehichle. Replacement parts were udated without this design. I ask about this and was informed that they did away with the original design. 30,000 dollars rolling down the road looking for an accident. They weren't interested in my safety or correcting the problem at there cost, but were glad to relieve me of 536. 00. Thank you.

1. I observered on 3 occassions intermittent low speed braking problems. I took the vehicle to the dealer on 23may05 and they found nothing wrong. 2. While parked and idling the vehicle on 11jun05, there was a loud bang noise from under the hood. A part of the braking sytem from under the hood looks like it seperated under pressure from the rest of the master cylinder. This resulted in loss off most brake fluid. 3. Vehicle was towed to shop, but repairs will not commence till 13jun05.

2004 chevy Silverado LS ext. Cab 1500 4x4. Brake pedal going to floor board when applying brakes. Must pump brake pedal to be able to stop. Has happened 12 to 15 times since I took delivery 12/20/03. Have taken to dealer 2 times and of course did not show up when they test drove it. Service manager said not to pump the brake pedal because of the antilock brakes, they are suppose to act and stop the truck. Told service manager truck is still rolling with pedal to the floor and if you don't pump them you will not stop and probably be involved in accident. I did not feel any antilock action, pulsations. Also have seen same problems and complaints on the internet with chevy and GMC pickups. Seems to actup more on cold and damp days. Contacted brian landin at customer relations in detroit. He said don't beleave anything you see on the internet. We had 3way conversation with service manager at dealership and brian pretty much agreed with his service manager. [if it ain't broke , don't fix it] I tow a 21ft. Boat with surge brakes and must have good brakes on the tow vehicle or you don't stop. He told me to stop being so paranoid and to contact my service manager if I have further problems. I told him that if I have an accident, my lawyer will be in contact with him. It was left at that point. I see that chevy and GMC are calling back 1999 to 2002 pickups and SUV's for brake problems. Could this be inherited problem with all there trucks , seeing that they completely revamped their brake system for the 2005 year. If you have any answers to this problem or fixes, please contact me. Seems to me that there is some problem with the master cylinder? thankyou, roland torok milage is 17,400.