Removal Procedure
- Drain the differential lubricant. Refer to Lubricant Change .
- Disconnect the clutch pump check valve electrical connector.
- Remove the clutch pump check valve mounting bolts (4, 5).
- Remove the clutch pump check valve (3) by carefully pulling straight out of the differential carrier.
- Remove the O-ring seals (1, 2) from the valve. The O-ring seals may be reused if not cut or damaged.
Installation Procedure
- Lubricate the O-ring seals (1, 2) with synthetic gear oil GM P/N United States 12378514 Canada P/N 88901045 or equivalent.
- Install the O-ring seals to the valve.
- Install the clutch pump check valve to the differential carrier by carefully pushing the valve straight in until fully seated.
- Install the clutch pump check valve mounting bolts (4, 5).
- Connect the clutch pump check valve electrical connector.
- Fill the rear differential lubricant. Refer to Lubricant Change .
Important: Inspect the clutch pump check valve O-ring seals in order to ensure they are not cut or damaged. Replace cut or damaged O-ring seals with new seals.
Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.
Tighten
Tighten the bolts to 10 N·m (106 lb in).
