Product review (5 stars): Saved me a service call.
Our GE fridge was freezing up and would not cool. I first replaced the burnt-out defrost element, which helped, but the defrost cycle was not triggering as often as it should. I replaced 2 of these sensors, along with the one that clips onto the evaporator, and problem solved. Pretty simple installation. You'll need wire strippers, wire nuts, and it would be good to have some silicone you can put into the wire nuts. Otherwise, installation was super easy.