Sierra 1500 4WD V8-6.0L (2007)
1. Apply sealant GM P/N 12346004, (Canadian P/N 10953480), or equivalent, to the threads of the drain and fill plugs.
Notice: Refer to Fastener Notice.
2. Install the drain plug.
Tighten the plug to 25 N.m (18 lb ft).
3. Fill the transfer case to the bottom of the fill plug hole with DEXRON(R)-III, GM P/N 12346143, (Canadian P/N 10952622).
4. Install the fill plug.
Tighten the plug to 25 N.m (18 lb ft).
5. Install the transfer case shield, if equipped.
6. Lower the vehicle.