Removal Procedure 
- Raise the vehicle. Refer to 
Lifting and Jacking the Vehicle
 .
 
- Remove the fill plug.
 
- Remove the drain plug.
 
Important: Ensure that an approved drain pan is used when draining the transfer case.
- Allow the transfer case to drain completely.
 
Installation Procedure
- Apply pipe sealant GM P/N 12346004 (Canadian P/N 10953480) or equivalent to the drain plug threads.
 
Notice: Refer to Fastener Notice in the Preface section.
- Install the drain plug.
 
Tighten
Tighten the drain plug to 27 N·m (20 lb ft).
- Fill the transfer case with the proper fluid. Refer to 
Approximate Fluid Capacities
 .
 
- Apply pipe sealant GM P/N 12346004 (Canadian P/N 10953480) or equivalent to the fill plug threads.
 
- Install the fill plug.
 
Tighten
Tighten the fill plug to 27 N·m (20 lb ft).
- Lower the vehicle. Refer to 
Lifting and Jacking the Vehicle
 .