NHTSA complaint: 2015 GMC SIERRA 1500 — SERVICE BRAKES
BRAKE PEDAL OR THAT INCREASED EFFORT IS NEEDED TO DEPRESS THE BRAKE PEDAL. ALSO, IN SOME CASES A TICK OR TICKING NOISE MAY BE HEARD, WHICH MAY SOUND LIKE AN EXHAUST MANIFOLD LEAK.
National Highway Traffic Safety Administration — Office of Defects Investigation