Two problems related to brake disc pads have been reported for the 2014 GMC Sierra 1500. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2014 GMC Sierra 1500 based on all problems reported for the 2014 Sierra 1500.
This issue relates with a recent recall with the gm brake system (NHTSA campaign number: 19v645000 / gm recall number: n192268490). The recall fix by gm fails to fully fix the problem as additional repairs are required to make the vehicle safe again. The incident began when going down a hill at low speed. A message came on the dash that said "service brake assist" and the brakes seemed to lose power which required the driver the use both feet to push down on the brake pedal to prevent a crash into the car in front. The brakes regained normal function for a while then a few miles later the same problem occurred. This went on for for a while longer until the need to use both feet to achieve full stopping power was permanent. Driver pulled over and, through an internet search, discovered many others had the same problem and a recall had been issued. An appointment was made with a local gm dealer and the vehicle was dropped off for repair. The gm dealer called the driver and informed him that additional repairs, beyond the recall instructions, were required for the vehicle's brakes to function adequately and safely. This included replacing the booster pump, brake pads, to "reline the frt brakes as needed. ".
My 2014 GMC sierra is having a major brake issue. I replaced the brake pads after being told the padding was low. This did not fix the problem. My truck does not slow down when braking on a hill. I read in another article that the vacuum pump goes out at a low rpm, causing the truck not to stop. Unfortunately, my wife was driving my truck down the driveway, and couldn't stop. This issue almost caused her to hit another vehicle that was passing at the end of the driveway.