For 1990-2009 cars

### Removal Procedure

1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle.
2. Remove the exhaust flexible pipe. Refer to Exhaust Flexible Pipe Replacement.
3. Remove the drain plug.
4. Remove the fill plug.

### Installation Procedure

1. Clean the drain plug and apply sealant GM P/N 12346004 (Canadian P/N 10953480) to the threads.

Caution: Refer to Component Fastener Tightening Caution in the Preface section.

2. Install the drain plug.

Tighten
Tighten the drain plug to 39 N·m (29 lb ft).

3. Fill the transfer case with lubricant to the bottom of the fill plug, or 540 ml (18.2 oz). Refer to Adhesives, Fluids, Lubricants, and Sealers for lubricant recommendation.
4. Clean the fill plug and apply adhesive GM P/N 12345493 (Canadian P/N 10953488) to the threads.
5. Install the fill plug.

Tighten
Tighten the fill plug to 39 N·m (29 lb ft).

6. Install the exhaust flexible pipe. Refer to Exhaust Flexible Pipe Replacement.
7. Lower the vehicle.