Product review (5 stars): Super easy to replace this unit ...
Heres how to do this: Unplug the fridge, remove 3 hex head screws, disconnect one plug, pull the old unit out, plug in the new one and put the 3 screws back in. Completely done in less than 10 minutes start to finish. One of the easiest appliance repairs Ive ever attempted.  It took a few hours before I could tell it was working but by morning it had cycled several trays.