Installation Procedure

Fill the transfer case to the bottom of the fill plug hole with the recommended fluid. Adhesives, Fluids, Lubricants, and Sealers , or Approximate Fluid Capacities .
Courtesy of GENERAL MOTORS COMPANY

CAUTION:
Refer to Component Fastener Tightening Caution .

Install a NEW fill plug (1) and seal and tighten to 40 N.m (30 lb-ft).
Install the power transfer unit heat shield, if equipped. Power Transfer Unit Heat Shield Replacement (M3D transmission with LSY engine)
Lower the vehicle. Lifting and Jacking the Vehicle