How to Release Locked Odometer Mileage to the Original Gauge Control Module

If, after you attempt to transfer mileage to a new gauge assembly, the odometer display has dashes (---), is garbled, or shows an incorrect value, the original gauge control module can be unlocked and restored to its original state so that it can be used again for additional attempts to transfer the mileage:

1. Confirm that you have the latest HDS version of software.
2. Make sure that the HDS shows the correct VIN for the vehicle you are working on.
3. With the ignition switch in LOCK (0), reconnect the original gauge control module.
4. Completely re-boot the HDS.
5. Clear any stored DTCs.
6. Select BODY ELECTRICAL from the SYSTEM SELECTION MENU with the HDS, then select GAUGES from the BODY ELECTRICAL SYSTEM SELECT menu.
7. Select GAUGE CONTROL MODULE REPLACEMENT from the ADJUSTMENT menu, and select LOCK RELEASE.
8. Follow the prompts and the odometer mileage will be restored.
9. Start over and make sure the screen prompts are followed.