Rainier AWD L6-4.2L (2007)
Control Module: Service and Repair
Transmission Control Module Replacement
Service of the transmission control module (TCM) should consist of reprogramming of the TCM. If the diagnostic procedures call for the TCM to be
replaced, the replacement TCM should be checked to ensure that the correct part is being used. If the correct part is being used, remove the faulty TCM
and install the new service TCM. The replacement TCM must be programmed.
Removal Procedure
1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection.
2. Disconnect the cooling fan electrical connector for additional clearance while removing the TCM.
3. Depress the engine control module (ECM)/TCM cover retainers (2).
4. Remove the ECM/TCM cover from the ECM/TCM bracket (1).
Notice: Refer to Handling Electrostatic Discharge Sensitive Parts Notice.
Important: It is not necessary to disconnect the TCM electrical connectors in order to remove the TCM from the ECM/TCM bracket.
Only disconnect the electrical connectors if servicing of component requires disconnecting of the electrical connectors.
Important: Remove any debris from around the TCM connector surfaces before servicing the TCM. Inspect the TCM module connector
gaskets when diagnosing or replacing the TCM. Ensure that the gaskets are installed correctly. The gaskets prevent contaminant
intrusion into the TCM.
5. Disconnect the TCM electrical connector (1) from the TCM (2)
