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 UnitTow/Haul Mode
This feature can assist when towing
or hauling a heavy load.
: Select Tow/Haul Mode by
pressing the button on the center
console.
When Tow/Haul is activated, the
Tow/Haul symbol will come on in the
instrument cluster. A Tow/Haul ON
message will also appear in the
DIC. For vehicles e ...