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.Fuel Pump Installation Fuel System Fuel Pumps
Special Tools EN 48896 HP Fuel Pump Installation Alignment GaugeFor equivalent regional tools, refer toSpecial Tools.Note:The camshaft must be in the base circle position before the high pressure fuel pumpis installed.Use the EN 48896 alignment gauge-(2) to ensure that the camshaft lobe is in the ba ...