K 1500 Suburban 4WD V8-5.3L VIN Z Flex Fuel (2003)
Fluid - Transfer Case: Service and Repair
BW 4482-NR4 Transfer Case
Transfer Case Fluid Replacement
Removal Procedure
Important: When performing the following procedures, use only hand tools to remove and install the drain and fill plugs.
1. Raise and suitably support the vehicle. Refer to Vehicle Lifting.
2. Remove the transfer case shield, if equipped.
3. Remove the fill plug.
4. Remove the drain plug.
5. Allow the transfer case fluid to drain completely.
Installation Procedure
Important: Use only drain and fill plugs that are made from aluminum. Steel or brass plugs are not compatible with the magnesium case.
1. Apply sealant, GM P/N 12346004, (Canadian P/N 10953480), or equivalent to the threads on the drain and fill plugs.
Notice: Refer to Fastener Notice in Service Precautions.
2. Install the drain plug.
Tighten
Tighten the plug to 25 N.m (18 lb ft).
3. Fill the transfer case to the bottom of the fill plug hole with the approved fluid.
