Accessory Power Module (APM) Replacement
WARNING: This page is about a different car, the 2011 GMC Sierra, 2011 GMC Cab & Chassis Sierra, 2011 Chevrolet Silverado, and 2011 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
If the APM is replaced, APM programming must be performed. Refer to Service Programming System (SPS) .