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 UnitOnStar Additional Information
In-Vehicle Audio Messages
Audio messages may play important
information at the following times:
Prior to vehicle purchase.
Press to set up an account.
With the OnStar Basic Plan,
every 60 days.
After change in ownership and
at 90 days.
Transferring Service
Pres ...