Accessory Power Module (APM) Reprogramming
WARNING: This page is about a different car, the 2010 GMC Sierra, 2010 GMC Cab & Chassis Sierra, 2010 Chevrolet Silverado, and 2010 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
When APM reprogramming must be performed, refer to Service Programming System (SPS) .
Ensure the following conditions exist in order to prepare for APM programming or reprogramming:
- The battery is fully charged.
- The ignition switch is in the RUN position.
- The Techline equipment cable connection at the data link connector (DLC) is secure.
Program the APM using the latest software matching the vehicle. Refer to up-to-date Techline equipment user instructions.
If the APM fails to program, proceed as follows:
- Ensure the DLC and APM connections are good.
- Inspect the Techline equipment for the latest software version.
- Attempt to program the APM. If the APM still cannot be programmed properly, replace the APM.