Here ya go. The fill plug is on the driver's side. The drain plug is on the bottom (obviously). Basically, if it is overfilled, just let it pour out of the fill plug hole (into a catch pan, obviously) until no more pours out. You'll need a 10mm allen wrench and the car needs to be level. If yours has been to the dealership already to have the pinion seal replaced, or have the diff checked out, then they should have already corrected the fluid level if it was incorrect.
Also, see page 5-40 in your owner's manual
Edited to correct allen wrench size
