Diagnostic Test
- PERFORM TCM REPLACEMENT PROCEDURE NOTE: Controller is programmed with generic software and will not allow the correct vehicle Powertrain management.
- With the scan tool, perform the TCM replacement procedure.
Were you able to update the controller successfully?
Yes
- Test Complete.
- Perform NAG1 TRANSMISSION VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Transmission Control (TCM) - Standard Procedure
No
- Using the schematics as a guide, check the Transmission Control Module (TCM) terminals for corrosion, damage, or terminal push out. Pay particular attention to all power and ground circuits. If no problems are found, replace the TCM per the Service Information. Refer to Electrical - Electronic Control Modules/Electronic Control Modules/MODULE, Transmission Control - Description
- Perform NAG1 TRANSMISSION VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Transmission Control (TCM) - Standard Procedure
- With the scan tool, perform the TCM replacement procedure.