Programming Theft Deterrent System Components
WARNING: This page is about a different car, the 2005 GMC Canyon and 2005 Chevrolet Colorado. However, it is still accessible from the selected car via links, so may be relevant.
Perform BCM special function "Request VTD Info. for SPS", then follow the instructions on the screen. Refer to Programming Theft Deterrent System Components in Theft Deterrent.