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 System Seal Replacement
Removal ProcedureRemove the seal washer from the A/C refrigerantcomponent.Inspect the seal washer for any signs of damage.Inspect the A/C refrigerant components for damage or burrs.Repair or replace as necessary.Note:DO NOT reuse sealing washer.Discard the sealing washer.Installation ProcedureNote:F ...