Repair Procedure

This bulletin involves reprogramming (flashing) the TCM with new software (calibrations) after the appropriate mechanical repair has been completed.

1. Connect the MDS and DRB III (Scan Tool) to the vehicle and power them up.

NOTE:
FOR THE 1996 MODEL YEAR AND FUTURE VEHICLES, THE TCM CAN BE REPROGRAMMED FROM THE DIAGNOSTIC CONNECTOR. THE FLASH PROGRAMMING KIT (CH5500) IS NOT NEEDED.

2. Use the arrow keys on the DRB III and from the MAIN MENU Screen select MDS DIAGNOSTICS.

3. Use the arrow keys on the MDS and select DIAGNOSTIC MENU from the MDS screen, then press NEXT MENU.

4. Use the arrow keys on the MDS and select VEHICLE CONTROLLER PROGRAMMING, then press NEXT MENU.

5. Use the arrow keys and select PROGRAMMING OF ALL OTHER CONTROLLERS WITH MDS & DRB III on the MDS, then press NEXT MENU.

6. Follow the steps presented on the MDS and DRB III which will allow the DRB III to obtain the current part number of the PCM.

7. The MDS will display the description of the updatable PCM and/or TCM on the vehicle and the appropriate replacement part number(s). Select the description of the TCM, then press NEXT MENU to begin programming.

8. The MDS and DRB III will prompt for any operator action needed during the remainder of the programming process.

If both the PCM and TCM on the vehicle have already been updated, a NO UPDATES AVAILABLE message will be displayed. If this is the case, verify the Authorized Modification Labels are attached to the TCM and near the Vehicle Emission Control Information (VECI) label. If the labels are not attached, proceed to step 9. Otherwise end the procedure.

NOTE:
THE FOLLOWING STEPS ARE REQUIRED BY FEDERAL LAW.





9. Type the necessary information on the Authorized Modification Label and attach the label near the VECI Label.





10. Type the necessary information on the "Authorized Software Update Label" and attach it to the TCM and cover label with a clear plastic sticker.