Transmission Control Module (TCM) Replacement
WARNING: This page is about a different car, the 2008 GMC Sierra, 2008 GMC Cab & Chassis Sierra, 2008 Chevrolet Silverado, and 2008 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
If the TCM is replaced, TCM Reprogramming must be performed. Refer to Service Programming System (SPS) .