GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

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.


    Object Number: 660281  Size: SH
  1. Remove the transfer case shield, if equipped. Refer to Transfer Case Shield Replacement .
  2. Remove the fill plug.

  3. Object Number: 660282  Size: SH
  4. Remove the drain plug.

Installation Procedure

    Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 660282  Size: SH

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

  3. Fill the transfer case to the bottom of the fill plug hole with manual transmission and transfer case fluid GM P/N 88861800 (Canadian P/N 88861801).

  4. Object Number: 660281  Size: SH
  5. Install the fill plug.
  6. Tighten
    Tighten the plug to 20 N·m (15 lb ft).

  7. Install the transfer case shield, if equipped. Refer to Transfer Case Shield Replacement .