Product review (5 stars): Amazingly simple, effective, quick
As another reviewer commented, the inventor of this was a genius. I hadn't even made it through a full syringe of hot water when the little hose thawed the blockage enough to make it pop out into the refrigerator tray when briefly tapped the dispenser lever. Less than a minute in my case. Unbelievable.  If GE isn't going to recall these refrigerators per the lousy design (water line should be better insulated inside the freezer door) the least they can do is buy this kit in bulk and send out to any customer just for the asking, for free.

Search Youtube for "The FASTEST way to thaw a frozen dispenser!" and you'll find Andy's demo. Yes, it's really as easy as it demonstrates it.