I know this isnt the correct section but it seems to be the most viewed.. i have a small problem. I have a 2005 yukon xl Denali (parents vehicle) and a 2004 silverado 2500hd lt2 (brothers truck) The silvy came with bose audio from the factory and the denali came with bose navigation head unit. My brother wants to put the navigation radio in his silvy but when i plug it up i get "theftlock activated" when i turn the key on. Ive read that you can do a simple sequence of key cycles and it will "relearn" the radio and bcm.. is this correct or do i have to actually hook up to it and clear the vin data from the radio and do a relearn procedure with a computer hooked up?