Draining Procedure
- 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.
Filling Procedure
Notice: Refer to Fastener Notice in the Preface section.
- Install the drain plug to the differential.
Tighten
Tighten the differential drain plug to 39 N·m (29 lb ft).
- Clean any dirt from around the differential fill plug.
- Remove the fill plug from the differential.
Important: If equipped with a limited slip differential, limited slip differential lubricant additive, GM P/N 1052358 (Canadian P/N 992394) or equivalent must be added first. Refer to
Approximate Fluid Capacities
.
- Fill the differential with 75W90 synthetic axle lubricant , GM P/N 12378261 (Canadian P/N 10953455) or equivalent. Refer to
Approximate Fluid Capacities
.
- Inspect the gear lubricant 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.
- Install the fill plug to the differential.
Tighten
Tighten the fill plug to 39 N·m (29 lb ft).
- Lower the vehicle.