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 UnitWhat Fuel to Use in the U.S. (Diesel)
Use of diesel fuel with ultra low
sulfur content (15 ppm, maximum) is
required. Look for service station
fuel dispensers with this label in
green:
The diesel fuel must meet ASTM
International specification D 975,
Grades No. 2-D or No. 1-D S15,
also known as Ultra Low Sulfur
Diesel. Cont ...