Table 1 shows 15 common service brakes related problems of the 2003 GMC Sierra. The number one most common problem is related to the brake hoses, lines/piping, and fittings (38 problems). The second most common problem is related to the brake fluid leak (eleven problems).
I was approaching a stop light driving on a 4 lane 55 mph speed zone. As I was approaching the stop light I starting pressing on the brake pedal. The pedal had no resistance it kept going to the floor. I started pumping the pedal trying to slow my truck down, no use. Read details...
As I stated pulling out of my parking space. I pressed down on the brake pedal and it went to the floor. I quickly put it in park. Then checked under the truck to find brake fluid leaking all over. The line had rusted apart. Read details...
When traveling at a slow speed, less than 10 miles per hour, if brake is applied the pedal rumbles and the truck continues to move unless I pump the brakes. This is happening during clear days no rain, snow or loose gravel. Read details...