Important: When performing the following service procedures, use only hand tools in order to remove and install the fill or drain plugs. Always start the plugs by hand in order to prevent cross threading.

1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
2. Remove the transfer case shield. Refer to Transfer Case Shield Replacement .
3. Remove the transfer case fill plug.



4. Remove the transfer case drain plug.

Notice: Refer to Fastener Notice in the Preface section.

Important: If the drain or fill plug have to be replaced, use only aluminum replacement drain plugs. Steel plugs will react with the magnesium of the transfer case.

1. Install the transfer case drain plug.

Tighten
Tighten the transfer case drain plug to 20 N·m (15 lb ft).

2. Fill the transfer case to the bottom of the fill hole with DEXRON® III, GM P/N 12378470 (Canadian P/N 10952622).



3. Install the transfer case fill plug.

Tighten
Tighten the transfer case fill plug to 20 N·m (15 lb ft).

4. Install the transfer case shield. Refer to Transfer Case Shield Replacement .
5. Lower the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.