Differential Clutch Pump Check Valve Cleaning and Inspection

WARNING: This page is about a different car, the 2004 Pontiac Aztek and 2004 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Inspecting Inlet Valve

Courtesy of GENERAL MOTORS CORP.

Inspect the inlet valve for the following:

Damaged, loose, or missing pick up screen (1)
Damaged or missing O-rings (2)
Damaged electrical connector (3)
Oil passages (4) restricted by dirt or debris