Programming the XBCM
WARNING: This page is about a different car, the 2009 GMC Sierra, 2009 GMC Cab & Chassis Sierra, 2009 Chevrolet Silverado, and 2009 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT:
The vehicle theft system may not operate properly if a replacement XBCM is not properly programmed.
Program the auxiliary body control module. Refer to Service Programming System (SPS) for more information.