Removed the refrigerator lower back panel, removed the old valve, and replace it with a new one.
Important helpful hints:
+ Pay close attention to the setup of the old valve before removing - I took pictures.
+ Be gentle when unscrewing the copper fitting on the old valve so you can reuse on new one use wd40 if needed to help loosen.
+ Use care or gloves handling the aluminum back panel- it can be sharp.