Brake Disc Caliper problems of the 1999 GMC Sierra

I just took my 99 GMC Sierra 1500 to the local dealership because the brake pedal going all way to the floor after driving on a major highway and felt the softness in the brake pedal attempting to stop because of heavy traffic. The service tech found the brake line leaking due corrosion, the tech gave the worst case scenario which would be replacing all 4 calipers, brake hoses, and brake lines for over $3000. 00. Gm or NHTSA needs to issue a recall or something but someone gets kill. Lucky there has been no deaths because of sub quality parts used by gm.

Front brake hose from frame to caliper rusted out and caused brake failure. When the issue was being looked at, noticed that the entire frame and all parts on the bottom of the truck were completely rusted like they were 100 years old. Appears there was no rust inhibitor included in any of the metal. All brake lines under body of the truck are so rusted that it is not safe to drive. Fuel line is also rusted. I feel that all of these issues are due to poor rust inhibitor used during manufacturing of the truck.

Coming back from the store then entering my drive way the brake pedal went to floor. Used emergency brake to stop. Looked under truck and saw brake fluid on ground. Had to be towed in. Had to have brake lines replace. Heavy corrosion . Truck had bad rust problem. Cost,$883. 00at 60,000 mi gas lines started to leak from corrosion. Had to be replaced on 10/09/2013. For $900. 00the under carriage is badly rusted and looks it has 200,000mi instead of 60,000mi. Brake backing plates are almost rusted away. Had to replace rear calipers ,rotors,pads 2 times.

1999 GMC Sierra-46000 miles-all brake lines rusted out,3 leaks. Due to design of truck,cab has to be removed to access brake lines-also rear brake calipers rusted out after >4600 miles and had to be replaced. All repairs done at dealers.

I sent this info to gm customer service and they told me the problem was because I live in ohio where salt is used on the roads in the winter. I did not bother trying to debate this silly response, I am just forwarding same info to your department. I am the original owner of a (GMC Sierra z-71, 4x4 which has always been garaged and only has 66,000 miles. While replacing a failed right rear brake caliper, I noticed the brake shield was extremely rusty. During this inspection an approximately 4 inche piece broke off in my hand (see pictures). I perform most repairs myself but since this involved removing the axle it was beyond my capability. The cost of this repair at bob ross GMC was $222. 00 which I paid. I am writing GMC because I do not believe a part such as this brake shield should rust so bad as to fall apart and have rusted through holes (see attached photo) in only 6 â½ years. I have inspected the driver's side rear brake shield and although not quite as bad as the passenger side rear brake shield, it is extremely rusty and probably will fail and need replaced in the next year. My position is this is a material design flaw that gm should investigate. Failure of this part, as in my case, will allow the elements (water, snow, dirt, rocks, etc. ) to damage the brake rotor and ultimately cause premature brake wear and failure. The brake shields on the front brakes have no rust, as I would expect of a vehicle that is only 6 years old. I can send pictures of failed part but not sure how to do with this form.