GM Service Manual Online
For 1990-2009 cars only

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

Transmission Control Module (TCM) Replacement

If the TCM is replaced, refer to Service Programming System (SPS) in Programming and Setup.

TCM Programming Procedure

The following procedures must be performed:

Refer to Service Programming System (SPS) in Programming and Setup.

Ensure the following conditions exist in order to prepare for TCM 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 TCM using the latest software matching the vehicle. Refer to up-to-date Techline equipment user instructions.

If the TCM fails to program, proceed as follows:

    • Ensure the TCM connection is good.
    • Inspect the Techline equipment for the latest software version.
    • Attempt to program the TCM. If the TCM still cannot be programmed properly, replace the TCM.

TCM Setup

This device requires no setup.