Diagnostic Test
- CHECK IF THE TCM IS FLASHABLE NOTE:
Controller is programmed with generic software and will not allow the correct vehicle Powertrain management.
- With the scan tool, record the vehicles controller part number.
- Select Use Controller Part Number under the Flash Tab.
- Flash the controller with the correct software.
Were you able to update (flash) the controller successfully?
Yes
- Test Complete.
- Perform the NAG1 TRANSMISSION VERIFICATION TEST. Refer to STANDARD PROCEDURE .
No
- Replace the TCM in accordance with the Service Information. Refer to MODULE, TRANSMISSION CONTROL, REMOVAL .
- Perform the NAG1 TRANSMISSION VERIFICATION TEST. Refer to STANDARD PROCEDURE .