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Rear Differential Clutch Control Module Replacement

WARNING: This page is about a different car, the 2010 Buick LaCrosse. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Rear Differential Clutch Control Module
GM2279876Courtesy of GENERAL MOTORS CORP.
Callout Component Name
Preliminary Procedures: 
Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle
1 Protective Cover
2 Differential Clutch Control Module Bolts (Qty: 2)
WARNING: The hydraulic pressure in the differential clutch is very high. To prevent personal injury, wait for at least 10 minutes before removing any parts from the differential clutch.
CAUTION: Refer to Fastener Caution .

Tip:  Leave the bolts in the control module and remove them with the control module.

Tighten:  6 N.m (53 lb in)

3 Rear Differential Clutch Control Module and Seal
Procedure: 
Disconnect the electrical connector.
Tip:  Do not separate control module and valve