Brake Master Cylinder problems of the 2000 Chevrolet Silverado 1500

I own a 2000 Chevrolet silverado z71 4x4 extended cab short bed with 5. 3l and auto transmission slt package with 165000 highway miles. I travel around 62 miles a day. On June 4th, 2014, I was traveling the freeway at 70mph and I began slowing to exit when the brake pedal dropped to the floor. No matter how much I pumped or held down the pedal it would not even slow. I immediately began shifting the transmission manually to lower my speed which did help and then applied the emergency brake which seem to work for a second then seized as I was pressing the pedal. It was just stuck and wouldn't go down any further. Unfortunately it was rush hour and the exit was backed up from the light and I was running out room quickly. Having no shoulder on the exit, I had to leave the roadway and veer off into a gas station lawn which I managed to get the truck to slide around and stop before heading into traffic. After checking the master cylinder and seeing it almost empty I towed the truck home. To my surprise when looking under the truck, I find a leaking brake line. Then I start to notice all of the brake lines are rusted completely through from the front calipers to the rear. This truck is only 14 years old which tells me the materials used to manufacture these brake lines were not adequate. The speed at which they have rusted is ridiculous for a 14 year old vehicle. After doing some research I watched multiple news channels have reported on this issue but gm refuses to admit their fault. The entire under carriage and frame of these vehicles are rusting out way to quick when compared to all vehicles manufactured the same year and they all are rusting in exactly the same areas. This condition is a danger to not just the vehicle owners but to everyone sharing the road.

1 of 5 brake lines (master cylinder to abs module) rusted completely through causing me to lose all braking ability as I was to turn left across traffic. Luckily there were no other cars coming in the opposite direction or I would have been hit. The cost of the repairs was $1346. 95 which included the replacement of 4 additional lines that were rusted and replacement worthy. For gm to say that 1 line wouldn't cause a complete loss of braking power is wrong. I had a complete loss of braking power with only 1 line completely rusted through. Vehicle spent 2000-2002 in the northeast where originally purchased, 2003 in hawaii, 2004-2006 in southeast georgia, 2006-2013 in connecticut and 2013 to present in hampton roads area virginia.

Backing up truck, moved it forward and the brakes went, couldn't stop the truck. I was moving forward after having it on reverse, so the speed was slow (5mph). Noticed there was a puddle on the ground of brake fluid, and to further investigate, there was a lot of rust and corrosion that came from underneath. I was on vacation when this happened, called aaa for a tow on the date listed. Replaced brake lines, master cylinder, and noticed while replacing the brake lines, there's more corrosion coming from underneath.

Backing up to launch boat on ramp and brake pedal went to the floor. Drove truck 2 blocks to house used emergency brake to stop. Saw brake fluid on the road. Brake lines are severely corroded and one has failed. Master cylinder has lost all fluid.

Tl-the contact owns a 2000 Chevrolet Silverado 1500. While driving approximately 30 mph, the brake warning indicator illuminated until the engine was turned off. The vehicle failed to decelerate when pressure was applied to the brakes until after several attempts. The vehicle was taken to an authorized dealer where the brake master cylinder and booster were replaced. The manufacturer was notified of the defect. The approximate failure mileage was 21,532. Kmj.

The brake line running from abs unit to rear of truck ruptured in a parking lot in July of 2010. Several months later, in December of 2010, both brake lines running from master cylinder to abs unit ruptured when backing out of my driveway. I noticed the front brake lines going from abs unit to each front caliper were corroded in early March 2012 and replaced before they could rupture. It's a good thing I replaced them because barely moving the lines resulted in ruptures in both lines before they could be unthreaded to be replaced. Thankfully none of the ruptures resulted in an accident.

Each of the 3 brakes lines under the master cylinder has failed on separate occasions, fortunately all noticed when backing out of a parking spot. On all 3 occasions, the vehicle experienced a near total brake failure. All the line had rusted through and required replaced at my expense. The dual brake master cylinder does not provide acceptable emergency braking with a ruptured line. I am reporting my incidents following a report on the local news about these same failures happening on many gm trucks. My vehicle was purchased used with approximately 61,000 miles on it. Previous history is unknown. Date of original incident is probably not accurate.

2000 Silverado 1500 with 70,500 miles July/05 my brakes stated to feel like I only had 70% of my braking capacity. It does not matter whether I stomp on the brake or brake with increasing pressure,the antilock will not engage nor will the tires lock up. I replaced all 4 rotors and pads (non oe @ 62,500 miles). The lack of braking was still present. Next I replaced the master cylinder which has not solved the problem. I just had the dealer look at the system, they noted the rear pads were worn (after 8,000 miles). The dealership also said the non oe pads were probably the cause of the lack of braking. My concern was the fact that the lack of braking started when the oe pads were still on the truck.