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 UnitDiagnostic Repair Verification
Note:After a repair has been made, some DTCs require the ignition to be turned OFF thenback ON before the scan tool function will clear the DTC.Ignition OFF.Install any components or connectors that have been removed or replaced during diagnosis.Perform any adjustment, programming or setup procedure ...