Draining Procedure

WARNING: This page is about a different car, the 2008 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: View Of Differential Drain Plug

Courtesy of GENERAL MOTORS CORP.

Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
Clean any dirt from around the differential drain plug.
Position a drain pan under drain plug.
Remove the drain plug from the differential and drain the fluid.