Brake Master Cylinder problems of the 2005 Chevrolet Silverado

I had a soft brake pedal on my 2005 Silverado. I thought I had a bad master cylinder. I work at an Audi dealership and I was bringing the vehicle to work to check it out. As I approached the driveway to work, the brake pedal went to the floor. I used the emergency brake to slow down and pull into,the driveway. We inspected the vehicle at work and found that a steel brake line under the drivers side that runs along the frame rail had a hole in it due to rust. I find this completely unacceptable that a steel brake line rust through. Chevrolet used a poor material on their brake lines. I have been in the automotive business for 31 years in connecticut ( yes, salt is used on the roads ) and have worked for Ford, Volvo, hummer and Audi. I have never seen a brake line rust through. Chevrolet needs to fix this issue at their expense and not the consumers. The dealership wants $1500. 00 to repair using the same brake lines. I have purchased stainless steel lines and will perform the repairs at my shop .

Attempted to stop at stop sign and bake line between master cylinder and prop valve ruptured instantly draining brake fluid resulting in no braking. Stopped vehicle with parking brake. Upon inspection, determined that brake line had rusted out as a result of being mounted on top of frame rail where dirt, salt and moisture collect from front wheel spray.

2005 chevy c1500 half ton pickup t was placed in storage for about a month. This vehicle was never used and had only 13 miles on the speedometer when recieved from the dealer. This was a company vehicle, and when out of storage it was discovered there was no brake fluid. The master cyclinder was completely dry. Took to a dealer and dealer could not find any leaks. Essentially ,they could not find the cause.

Rear brakes; hanging up, the vehicle did not seem to want to mone from a stopped position. Three weeks later the service brake system light came on. The brake master cylinder was removed and replaced.