I changed my rack and pinion today and i was moving the steering wheel back and forth and I heard a click, thinking nothing about it i proceeded to put my new part in. When i turned my truck on the service light went on for the "Service Air Bag". I've never had this problem before and i was wondering if anyone knew what the issue can be. Also, i have a bullydog downloader and i read the DTC and it gave me a code U1064 unknown error. HELP!