Fridge wasn't cooling

Remove trays and front drawer (2 screws, probably optional, but but easier to work with it removed). Remove the icemaker (2 screws), disconnect icemaker electrical connection. Remove back panel (bunch of screws). Once there, I heated up the coil to remove all the ice so I could get to the thermostat (it had become very clogged from not being defrosted). Remove and replace the thermostat, then put everything back. Now works perfectly.