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Transmission Control Module

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 8HP50/850RE, VALVE BODY, REMOVAL AND INSTALLATION or 8HP75, VALVE BODY, REMOVAL AND INSTALLATION or 8P75PH, VALVE BODY, REMOVAL AND INSTALLATION .