Brake Light On problems of the 1999 GMC Sierra 1500

Coming to a stop sign I applied the brakes and they completely failed without warning; no lights or indication failure was imminent. The pedal went to the floor with no resistance. Managed to turn onto a dirt shoulder and downshift to stop. Inspection revealed rusted through rear brake line. Although the dash brake warning light comes on while starting the truck, it goes off and gives no indication the brake fluid is low. While repairing the brake lines it was noticed the frame of the truck is extremely rusty and flaking. After wire-brushing by hand,the frame is showing cracks on both sides, under the cab, near the rear, right about where a crossmember is attached. This vehicle is no longer safe to drive. I am not impressed with gm's claim that this was a lighter, stronger frame on this truck. We have 2 older trucks with nowhere near this much rust and neither have cracked. The design allows too much crud to accumulate inside the lip of the frame where it is almost impossible to wash out.

While driving on interstate 295 I noticed the brake light come on so I checked the emergency brake to make sure it wasn't pushed in I pulled over at the next rest stop I looked over truck all seemed ok after restarting light was off then came on while driving again as I got to my exit pedal went to the floor scary as hell but the truck did stop as I stepped all the way down . I proceeded home checked brake fluid none at all I added some and could see after I started and pumped brakes the fluid was spurting out a line onto under carriage I took to my tech he said its a known problem with chevy GMC and would cost close to $1500. 00 right now im unemployed and cant afford to have it fixed please help, help, help!.

I was coming upon a red light behind other traffic. I stepped down on the brakes to stop, and the peddle felt spongy. I tried pumping them, then nothing. I avoided hitting the truck in front of me by swerving across into the other lane and pulling into a parking lot, were I was able to bring the vehicle to a stop. The brake warning light never came on, and I don't understand while it was a total brake failure, I thought that's why there is a dual reservoir, and there was still plenty of fluid in both. Upon inspection, I saw the brake lines were all severely corroded, and the one going to the rear brakes was split. I know I live in michigan, and the truck is rusty(thanks again gm) but I have cars over 40 years old with original lines on them with absolutely no corrosion on them. This is a substandard part, that needs to be recalled before more people are injured or killed.

My abs system has failed the motor runs consistently by the pump under the drivers side door, I pulled the wire connection harness to silence it and now I have a constant yellow abs and red brake light on the dash panel. The dealership did the front sensor recall but still have the existing problem. This happened 3 years after I bought it but my warranty was up after 1 1/2 years because of my distance from my employer ate up the warranty.

The anti-lock brake system light illuminated. The vehicle was taken tot he dealer who diagnosed that the abs pump motor had seized and caused the abs to fail.