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 UnitSIR Warning Secondary
Warning:This vehicle is equipped with a Supplemental InflatableRestraint (SIR) System. Failure to follow the correct procedurecould cause the following conditions:Air bag deploymentPersonal injuryUnnecessary SIR system repairsIn order to avoid the above conditions, observe the followingguidelines:Re ...