GM Service Manual Online
For 1990-2009 cars only

The following service procedures require either a programming or a setup event be performed for a complete repair.

Accessory Power Module (APM) Replacement

If the APM is replaced, APM programming must be performed. Refer to Service Programming System (SPS).

Accessory Power Module (APM) Reprogramming

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.

Accessory Power Module (APM) Setup

This device requires no setup.