Ice maker coating falls off and ice makers last about 2-3 years

It's rather easy and straight foward
(I've done about 3 of them over the years)
take out the ice tray and if you can the top rack (depending on the model of your freezer) for more elbow room. unscrew the bottom screw under- neath the ice maker, then the two top ones, this makes it easier to remove the electrical connector.
take off the old plastic housing(snaps off) put it on new one, take the old wire harness off old, put on the new one, and last take the old wire that turns on the ice maker and shuts it off when full! that pulls out and snaps in the new one, and just reverse the install process!