Programming the XBCM
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2011 GMC Yukon XL, 2011 GMC Yukon, 2011 Chevrolet Tahoe, 2011 Chevrolet Suburban, and 2011 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT:
The vehicle trailer lamps, theft and rear fog lamps 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.