TrailBlazer 4WD L6-4.2L VIN S (2002)
Fluid - Transfer Case: Service and Repair
Transfer Case Fluid Replacement (Trailblazer Ext, Envoy XL)
Transfer Case Fluid Replacement (Trailblazer EXT, Envoy XL)
Removal Procedure
1. Raise the vehicle. Refer to Vehicle Lifting.
2. Remove the transfer case shield, if equipped.
3. Remove the fill plug.
4. Remove the drain plug.
Installation Procedure
1. Apply pipe sealant GM P/N 12346004 (Canadian P/N 10953480) or equivalent to the drain plug threads.
Notice: Refer to Fastener Notice in Service Precautions.
2. Install the drain plug.
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Tighten the plug to 27 Nm (20 ft. lbs.).
3. Fill the transfer case with the proper fluid.