My GE Profile Model PSS26PSTASS freezes food in the food section. The sensor was shot - so the fan on the bottom of the fridge would constantly run - ice was forming in the fridge and my water filter was freezing. I went away for a few days and it was shattered from freezing up.
Sensor is located behind the oval vent on the left wall of the fridge. between the 2nd and 3rd shelf. Unplug fridge - Pop off the white cover with a screwdriver - pull out the wires, clip the wires & strip them. Remove the foil cover from the back of the sensor, and pull out the old sensor. Replace the sensor and replace foil cover (I bought a new one). splice the new and old wires together using small blue wire nuts (you can fill them with silicone if you want to prevent moisture). stuff the wires back into the hole and replace the cover with the new sensor in it.