One problem related to brake disc pads has been reported for the 2015 GMC Sierra 1500. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2015 GMC Sierra 1500 based on all problems reported for the 2015 Sierra 1500.
At 47,000 miles. I noticed a slight vibration in the front end while braking on the highway. Over the next 2 weeks the vibration became considerable worse. It felt as though the rotors became warped which I have experienced during vehicle testing at previous employments. I replaced the front brake rotors and brake pads. During removal of the old brakes, I quickly noticed that 1 of the 4 pads was completely corroded through the backing plate. Brake pad contact area with the rotor was fine, but the backing plate had holes in it from the level of corrosion. Other 3 brake pads were fine, very minor surface corrosion at worst. Since replacing my brakes the vibration has never repeated.