Transmission Control Module Replacement for Chevrolet Optra 2005

Caution: Refer to Battery Disconnect Caution in the Preface section.




1. Disconnect the negative battery cable.
2. Disconnect the wiring connectors.
3. Remove the transaxle control module (TCM) from the bracket.

Important: After replacing the TCM, refer to Service Programming System (SPS) to ensure the module has the latest calibrations.




1. Install the TCM to the bracket.
2. Connect the wiring connectors.
3. Connect the negative battery cable.