GMC Sierra owners have reported 1,378 service brakes related problems since 1996. Table 1 shows the 34 most common service brakes problems. The number one most common problem is related to the vehicle's brake electric antilock (310 problems). The second most common problem is related to the vehicle's brake hoses, lines/piping, and fittings (235 problems). For details of each of the problem category, use the links in the table.
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...
The metal brake lines have corroded badly and now failed. Very unsafe, crash waiting to happen. Read details...
The contact owns a 2016 GMC Sierra. The contact stated that while reversing into a parking space and attempting to stop the vehicle, the brake pedal required an excessive amount of effort in order to bring the vehicle to a complete stop. Read details...
I nearly died when my brakes failed on my 2018 GMC denali this morning. I was only going 60 mph when another driver cut in front of me, and hit their brakes but when I tried to stop, I could not! I then began swerving from lane to lane because it was raining. Read details...
Noticed a puddle of fluid on the garage floor. Investigated and found it to be brake fluid. The entire reservoir emptied on the floor after a day. I had a hole in one of the brake lines under the drivers side. Looking under the truck all the line were terribly corroded and could break at any time . Read details...