I recently rotated my wheels. After I got my the latest dianogistic email from GM I don't believe I was successful in getting the truck to recognize the new wheel position. If memory serves I followed the instruction in the manuel. You have to either put air in or out for at least 5 sec. (I think) then go to the next wheel. I never did hear any horn chirps. If you don't have an air compressor this seems like a hassle. Anyone know any shortcuts or secrets or tips???

 

Yep, the horn chirps when the pressure is changed on each wheel. Try again, it sometimesis a PIA to get the computer to recognize the new wheel locations.