This depends on if you want to fix it yourself or not. If you rather do it yourself and save money you need to remove the fan so you can test and see if it's the fan itself such as the motor that has gone bad or if it's what powers the fan. Then you can call to get part.
Unplug refrigerator. Behind refrigerator you will see a metal plate to access main board to replace it. Then replace the fan too. Consult your book for wiring diagrams.
This is also known as the evaporator fan and if it is faulty, it could indicate cooling problems with the fridge. The evaporator cover panel may need to be removed to check for excessive frost build.
It is probably a bad motor. I would call a repair man or if you feel like a do-it-yourselfer call a repair parts place. You can usually order the replacement parts from a place and do it yourself pretty easily and cheaply too.
Make call to the ge customer care service center and registere a complain about ge refrigerator freezer fan through customer care executive and request to visit the engineer to the given address
