Rear End Fluid

LUBRICANT CHANGE Draining Procedure 1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information. 2. Clean any dirt from around the differential drain plug (2). Fig. 2: View Of Differential Drain Plug Courtesy of GENERAL MOTORS CORP. 3. Position a drain pan under drain plug. 4. Remove the drain plug (2) and gasket from the differential and drain the oil. Filling Procedure Fig. 3: View Of Differential Drain Plug Courtesy of GENERAL MOTORS CORP. 1. Install the drain plug (2) and gasket to the differential. Tighten: Tighten the differential drain plug to 32 N.m (23 lb ft). 2. Clean any dirt from around the differential fill plug (1). 3. Remove the fill plug from the differential. 4. Fill the differential with synthetic gear oil GM P/N United States 12378514 Canada P/N 88901045. Refer to Capacities - Approximate Fluid in Maintenance and Lubrication. 5. Inspect the gear oil level to ensure it is even with the bottom of the fill plug hole to no lower than 6 mm (0.25 in) below the opening. 6. Install the fill plug (1) and gasket to the differential. Tighten: Tighten the fill plug to 32 N.m (23 lb ft). 7. Lower the vehicle. 8. Operate the vehicle in tight right and left circles in order to engage the all-wheel-drive system. 9. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information. 10. Remove the fill plug from the differential. NOTE: Refer to Fastener Notice in Cautions and Notices. IMPORTANT: The vehicle must be driven in tight left and right circles after filling the differential in order to distribute the gear lubricant throughout the differential. 11. Inspect the gear oil level to ensure it is even with the bottom of the fill plug hole to no lower than 6 mm (0.25 in) below the opening. 12. Install the fill plug and gasket to the differential. Tighten: Tighten the fill plug to 32 N.m (23 lb ft). 13. Lower the vehicle.

Approx 2.1 Quarts

1=fill hole
2=drain hole.