Calibrate Control Module

To calibrate control module, perform the following procedure:

1. Install a scan tool.
2. Ignition ON.
3. Select Rear Differential Clutch Service Calibration Setup in the Rear Differential Clutch Control Module Configuration/Reset Function List.
   NOTE:

   The clutch service calibration will be the last two alphanumeric characters of the supplier assigned unique serial number. The characters must be entered exactly how it appears matching the uppercase. It will be found etched (1) on clutch pack housing.

4. Follow the scan tool directions to complete the calibration procedure.

Fig 1: Clutch Service Calibration Etched Area

Courtesy of GENERAL MOTORS COMPANY