Table 1 shows 15 common service brakes related problems of the 2004 GMC Sierra. The number one most common problem is related to the brake hoses, lines/piping, and fittings (33 problems). The second most common problem is related to the service brakes (ten problems).
Rusted brake line Read details...
Will not go into park Read details...
After having a gm dealer perform oil change, perhaps 1/4 mile down the street from their facility encountered traffic stopped at an intersection in front of me. Applied the brakes to find that they felt mushy, and before completely stopping went to the floor. Read details...