Replace a switch light in a GE Profile Arctica

Tonight my wife and I discovered that the inside of our GE Profile Artica was warm inside. The freezer seems still be code, and all sounds seem normal.

However, we found that the switch light (Part#609 on the diagram at http://www.appliancepartspros.com/partsearch/model.aspx?model_id=219393&diagram_id=22312331#d22312331) was broken, once my wife taped it down it started to cool off. How do i replace this? any help is appreciated

Thank you