HCM Reprogramming
WARNING: This page is about a different car, the 2005 GMC Sierra, 2005 GMC Cab & Chassis Sierra, 2005 Chevrolet Silverado, and 2005 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
If the hybrid control module (HCM) needs to be reprogrammed, refer to Service Programming System (SPS) .