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 UnitRear Support Replacement (AWD) Driveline Control 4WD Driveline Control
Special ToolsJ-37043Park Brake Cable Release ToolRemoval ProcedurePlace the park brake lever in the release position.Raise and support the vehicle. Refer toLifting and Jacking the Vehicle.Remove the tires and wheels. Refer toTire and Wheel Removal and Installation.Remove the exhaust muffler. Refer t ...