I actually had this same question and purchased that keypad replacement from eBay. The process to remove and replace the part was pretty straightforward. Remove the lock from the door, and remove the 6 screws that hold the metal plate on the back of the keypad. Once you remove the plate, you will need to remove 1 ground screw, and the keypad will come out. Replacement is the opposite, just need to make sure the cable stays in the channel so it will ensure a proper fit.
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