GM Service Manual Online
For 1990-2009 cars only

Rear Drive Clutch Control Module Replacement

Note: The transfer case solenoid valve and the rear drive clutch control module must always be replaced together due to calibration reasons.

If the rear drive clutch control module is replaced, the control module programming procedure must be performed. Refer to Service Programming System (SPS).

Rear Drive Clutch Control Module Reprogramming

Do not reprogram the rear drive clutch control module unless directed by a service procedure or a service bulletin.

If the rear drive clutch control module needs to be reprogrammed, refer to Service Programming System (SPS).

Component Replacement

The transfer case solenoid valve and the rear drive clutch control module must always be replaced together due to calibration reasons.