My refrigerator, GE model GSL 25JFPD BS, started to make a whining noise whenever the freezer fan kick on. It started out occasional only, and now more than half of the time the noise is on.
I turned off the freezer for about 15 minutes and turn it back on and the noise go away. But it came back after a few hours and stay on constantly.
Here are your parts
http://www.appliancepartspros.com/partsearch/model.aspx?model_id=5222404
First check that it is the evaporator fan (in the freezer) and not the condenser fan (by the compressor) that is making the noise.
If it is the evaporator fan read the following sticky
http://forum.appliancepartspros.com/refrigerator-freezer-repair/4220-ge-refrigerators-gs-ps-models-evaporator-fan-motor-test-replacement.html