Removal ProcedureRaise and support the vehicle. Refer toLifting and Jacking the Vehicle.

Remove the fill plug-(1).Installation Procedure

Clean the fill plug and apply adhesive GM-P/N-12345493 (Canadian-P/N-10953488) tothe threads.
Caution:Refer toFastener Caution.
Install the fill plug-(1) and tighten to 39-Y (29-lb-ft).Lower the vehicle.
Drain Plug Replacement Automatic Transmission Unit
Transmission Fluid Drain and Fill Automatic Transmission UnitAir Conditioning Compressor Oil Balancing Compressor
Draining ProcedureNote:Drain and measure as much of the refrigerant oil as possiblefrom the removed compressor.Remove the compressor crankcase oil drain plug and drain thecrankcase into a clean, graduated container.Drain the oil from both the suction and discharge ports ofthe removed compressor-(1) ...