Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the logical successor to CHARM, I recommend you try it!

Link: lemon-manuals.la

Control Module: Service and Repair

Do not interchange transmission control modules with previous year transmission control modules. If a same year Transmission Control Module (TCM) is being used from a different vehicle, the following procedures must be performed:
- Quick Learn Procedure
- Electronic Pinion Procedure
The transmission control module is next to the battery on the left side of vehicle, in the engine compartment. It is held in place by three mounting screws.

NOTE: If the transmission control module has been replaced, the following procedures must be performed:

- Quick Learn Procedure: This procedure will allow the transmission control module to learn the characteristics of the vehicle.
- Electronic Pinion Factor Procedure: This procedure will reprogram the TCM to compensate for different tire sizes and final drive ratios.

REMOVAL
1. Disconnect battery negative cable at the left strut tower.
2. Remove Transmission Control Module (TCM) 60 way connector.
3. Remove three mounting screws.
4. Remove TCM.

INSTALLATION
1. For installation, reverse removal procedure.