Could have been either the fan motor or the relay assembly. It was hard to pinpoint, so decided to replace both: the fan motor and the start device+capacitor. The start device + capacitor were very easy to replace. The fan motor was very difficult to change because they assembled the cooling circuit in front of the fan assembly making it impossible to take it out. I had to replace the motor in place with an angled nut driver and working by touch, to get the screws out and back in, fitting my fingers and tools in between the gaps of the cooling circuit. Getting the wires into the slots of the fan assembly was also a pain without taking the assembly out. Very disappointing from GE to have assembled that fridge in a way to make it impossible to get the parts out for repairs.