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 UnitDriveline Working Angles Measurement
Special ToolsJ-23498-ADriveshaft Inclinometer, or equivalentJ-23498-20Driveshaft Inclinometer Adapter, or equivalentNote:This measurement procedure is intended to measure U-jointsworking angles only, not constant velocity (CV) joint or couplerassembly working angles.Note:This procedure is intended t ...