Transmission Control Module (TCM)

NOTE:

New Transmission Control Modules (TCM) are supplied with generic software. When replacing a TCM, it must be programmed with vehicle specific software.

NOTE:

If this Electronic Control Unit (ECU) is being replaced with a new unit, use a diagnostic scan tool to perform the Flash Programming Procedure (if available).

For removal and installation of the Transmission Control Module Assembly (TCMA). Refer to VALVE BODY, REMOVAL AND INSTALLATION - 8HP/850RE or VALVE BODY, REMOVAL AND INSTALLATION - 8HP75 .