The refrigerator was squealing very loud and it was coming from inside the freezer, I found the evaporator fan motor was squealing and shutting down in sequence, thus not cooling the freezer and refrigerator sections properly.

The evaporator coil had a thin layer of frost on it, which is normal, so the sealed system was working properly.

I replaced the evaporator fan motor, and it started working normal again.

Here’s the evaporator fan motor for this model:
WP4389147 Motor-Evaporator
WP4389147 Motor-Evaporator

Western Arizona Weather:
This Afternoon
Mostly sunny, with a high near 79. North northeast wind around 5 mph becoming west northwest.

Mostly clear, with a low around 43. Northwest wind around 5 mph becoming calm.