I have had the same problem with ice buildup in the back of the vegetable drawer. My fridge was also purchased at Lowes.
After eight months of complaining, and several visits by GE a technician, they have now done a horrible and ugly job fixing the problem by taping with duct tape, a heater inside the refrigerator!!! When I questioned the technician, he said "I know it is a crappy job, but this is the best I can do". Neither Lowes nor GE have made any attempts to resolve this issue to our satisfaction.
I would not recommend buying the GE Profile refrigerator.
Product or Service Mentioned: Ge Appliances Refrigerator.