For 1990-2009 cars only
Draining Procedure
- Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
- Place a drain pan below the rear drive module.
- Remove the drain plug from the front of the rear drive module, below the input flange.
- Drain the fluid.
Filling Procedure
- Thoroughly clean the threads of the drain plug.
- Apply sealer GM P/N 12346004 (Canadian P/N 10953480) to the drain plug threads.
- Install the drain plug to the rear drive module.
- Remove the rear drive module fill plug.
- Fill the rear drive module with fluid GM P/N 12378514 (Canadian P/N 88901045).
- Inspect the fluid level. Refer to Rear Axle Lubricant Level Inspection .
- Thoroughly clean the threads of the fill plug.
- Apply sealer GM P/N 12346004 (Canadian P/N 10953480) to the fill plug threads.
- Install the fill plug to the rear drive module.
- Lower the vehicle.
Notice: Refer to Fastener Notice in the Preface section.
Tighten
Tighten the drain plug to 30 N·m (22 lb ft).
Specification
Fill initially with 750 ml (25.4 oz)
of fluid.
Tighten
Tighten the fill plug to 35 N·m (26 lb ft).
