GE Refrigerator Model GSS201epc THere is frost in the freezer compartment in the back. The Freezer and food compartment willnot get cold. IT has stopped making ice.

If this is a self defrosting model, it sounds like the defrost heater timer went bad. This will cause the ice build up as the unit cannot properly get defrosted. This is a very common item that goes bad in a fridge.