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 UnitSecondary Timing Chain Tensioner Installation - Left Side Valvetrain Valvetrain Timing Timing Belt Tensioner
Special ToolsEN 45027Tensioner ToolEN 46112Tensioner Retraction PinsFor equivalent regional tools, refer toSpecial Tools.Ensure that the left secondary camshaft drive chaintensioner-(2) is being installed.Using theEN 45027tool, reset the left secondary camshaft drive chain tensionerplunger.Install t ...