Rewriting the ODO Data and Transferring the Service Reminder System Data to a New Gauge Control Module

NOTE:
Obtain a new gauge control module before starting the rewriting process. Only new gauges can be rewritten.
Do not operate anything electrical (headlights, audio system, A/C, power window, door locks etc.) during the process.
Rewriting is not possible on a gauge control module that will not communicate with the HDS.
Make sure that the HDS shows the correct VIN for the vehicle you are working on.
Once you have started this procedure, you must complete it before removing the HDS from the data link connector.
Connect a 12 volt battery charger to insure that the 12 volt battery voltage is maintained during the process.

1. Rewriting the ODO Data on a New Gauge Control Module - Procedure

Rewriting and Transferring
1.
Before replacing the gauge control module, connect the HDS.
2.
Select GAUGES from the BODY ELECTRICAL SYSTEM SELECT MENU with the HDS.
3.
Select GAUGE CONTROL MODULE REPLACEMENT (ODO Rewrite) from the ADJUSTMENT menu, and follow the instructions on the display to retrieve the ODO value
5.
Select GAUGE CONTROL MODULE REPLACEMENT (ODO Rewrite) from the ADJUSTMENT menu, and select READ OUT DATA and save ODO value data into HDS.
6.
Connect a 12 volt battery charger to insure that the 12 volt battery voltage is maintained during the process.


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. In this way, 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 vehicle in the OFF (LOCK) mode, connect the original gauge control module.
4.
Completely re-boot the HDS.
5.
Clear any stored DTCs.
6.
Navigate to BODY ELECTRIC/GAUGES/GAUGE CONTROL MODULE REPLACEMENT (ODO Rewrite, etc.).
7.
Select 3. RELEASING LOCKED ODO VALUE.
8.
Follow the prompts and the odometer mileage will be restored.
9.
Start over the Rewriting and Transferring procedure from step 2.