Installation Procedure

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NOTE: Refer to FASTENER NOTICE in Cautions and Notices.

Important: Use only drain and fill plugs that are made from aluminum. Steel or brass plugs are not compatible with the magnesium case.

Install the drain plug.
Tighten

Tighten the plug to 20 N.m (15 lb ft).
Fill the transfer case to the bottom of the fill plug hole with Auto-Trak II, transfer case fluid, GM P/N 12378508 (Canadian P/N 10953626).

Fig 1: Installing Drain Plug
Courtesy of GENERAL MOTORS CORP.
Install the fill plug.
Tighten

Tighten the plug to 20 N.m (15 lb ft).
Install the transfer case shield, if equipped. Refer to TRANSFER CASE SHIELD REPLACEMENT .
Lower the vehicle.

Fig 2: Installing Fill Plug
Courtesy of GENERAL MOTORS CORP.