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 UnitCrankshaft Front Oil Seal Replacement Engine Block Seals and Gaskets
Special ToolsEN-35268-ACamshaft/Front Main Seal InstallerFor equivalent regional tools, refer toSpecial Tools.Removal ProcedureRemove the crankshaft balancer. Refer toCrankshaft Balancer Replacement.Use a flat-bladed tool to remove the seal from thefront cover.Installation ProcedureUse theEN-35268-A ...