Thanks everyone for all the advice. The water was not dispensing from my GE fridge even though the ice maker was working fine. Followed the advice above and ruled out a filter (switching the filter to the bypass tool) and water flow issue. I disconnected the water supply line and water was flowing fine. Then I disconnected the tube under the fridge and once again water was flowing fine. So at this point I was pretty sure it was a frozen line in the door. So I used a windshield reflector to keep the cold air in the freezer and left the door open and used a hair dryer to warm up the inside of the door. After a while a small piece of ice came out and water started flowing again. Be patient, it works!!!!! As long as you ruled out it is not a valve or water supply issue.