Fan was noisy and finally quit. Top of freezer was 50, bottom of freezer was freezing.

First I removed the top shelf, ice drawer and second shelf. Next, I used a 1/4" socket and removed the three screws holding the ice maker lower unit, unpluged and removed from unit. I removed the light cover revealing two screws. I then removed the plastic unit holding the fan. I unpluged all plugs and uncliped the white sensor from the back coils. Once the fan was out, I replaced it with the new one by unbolting the fan bracket and putting the new one in place. I clipped the new sensor in place and replaced all the parts in reverse order. I saved $200 in repair costs thanks to PartSelect.com.