[biggsteve97]

Unfortunately on the 03 and newer chevy trucks and suvs the radio has to be programmed thru the data link/obdII port with the gm diagnostic scanner. Your radio will not work in another vehicle unless it is programed to do so, however you can take it out of your vehicle and reinstall it as many times as you want and you will not have to reprogram the radio. I found this out the hard way with my dads wifes 03 silverado, had it been an 02 or older i could have simply entered a code on the face of the radio. GM did this so if for some reason someone where to take the effort and time to steal a factory radio they would not be able to use it under any circumstance unless the paid a dealer to reprogram it.