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 UnitFastener Caution
Caution:Use the correct fastener in the correct location. Replacementfasteners must be the correct part number for that application. Donot use paints, lubricants, or corrosion inhibitors on fasteners,or fastener joint surfaces, unless specified. These coatings affectfastener torque and joint clampin ...