Freezer was overfrosting and not defrosting. Frig. was not getting cold.

This was very easy. I removed all the shelves in the freezer compartment. I removed two nutscrews to remove the back wall. Then I removed the little radiator looking part by removing two more nutscrews. I unplugged the old thermostat assembly and installed the new one exactly like I removed it, then I reversed the procedure to put it all back together. Very easy my wife could have done it. ThANKS!! to Parts Select for the help of all the blogs I read before doing the job.