Product review (5 stars): Plug and play!
I was about to buy a whole new ice maker till I started researching the parts in more detail.  Certainly you need to know what failed on the ice maker.  In my case I had fairly high confidence the motor was failing (would try and run but clicked and eventually give up).  Three screws later and about 2 minutes the bad one was out and the new one was in.  I had ice going in about an hour or so and has been working great for over a month now.  You can find many youtube videos showing how to change it out if you need a confidence boost.  There is also a repairclinic website that has some great instructional stuff (they sell parts too so I feel bad to only use them for the info, though if I was uncertain on the parts I would consider the higher price due to the simple and liberal return policy).