Tl* the contact owns a 2012 gmc sierra 1500. the contact stated that the brakes functioned independently even when the accelerator pedal was applied. also, the traction control warning indicator illuminated. the failure occurred approximately five times. the vehicle was taken to bill marsh automotive group (1621 s garfield ave, traverse city, mi) where it was diagnosed that the steering wheel positioning sensor failed. the manufacturer was not notified of the failure. the failure mileage was approximately 55,000.
On cold morning starts, front brake pads will engage rotor, and release very slowly. then on a turn, front pads will engage, lock for a short time, and then slowly release. seems like engine has to warm up before brakes act normal. after cold morning startup, before moving vehicle, if brake pedal is pumped repeatedly for 30 seconds, brakes will try to act normal, when vehicle is moved. i am on my 2nd set of front pads and rotors. 1st set were severally worn. tech said it looks like your calipers were sticking.