Transmission Control Module (TCM)

REMOVAL 

1. Disconnect and isolate the negative battery cable. If equipped with an Intelligent Battery Sensor (IBS), disconnect the IBS connector first before disconnecting the negative battery cable.
2. Remove the air cleaner assembly. Refer to AIR CLEANER, REMOVAL AND INSTALLATION .
3. Disengage the lock holding the wire harness connector to the Transmission Control Module (TCM).

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   1 - Lock

4. Remove the fasteners that retains the wire harness bracket.
5. Separate the wire harness connector from the TCM.
6. Remove the TCM bolts.

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   1 - TCM Bolts

7. Separate the TCM from the vehicle.

INSTALLATION 

Follow the removal procedure in reverse for general reassembly of the components on the vehicle. The steps listed below are calling out specific procedures that should be followed during installation.

• When replacing a Transmission Control Module (TCM), the TCM must be programmed. Failure to properly program the TCM may result in the illumination of the Malfunction Indicator Lamp (MIL) and setting DTC(s).
• The Valve Body Solenoid Learn procedure must be performed when the TCM and/or valve body is replaced. Failure to perform the Valve Body Solenoid Learn procedure will result in reduced shift quality.
• Install the TCM bolts and tighten to the proper torque specifications. Refer to TORQUE SPECIFICATIONS .
• Install fastener that retains wire harness bracket to transmission and tighten securely.
• Perform the TCM programming and verification. Refer to MODULE, TRANSMISSION CONTROL (TCM), MODULE PROGRAMMING .