Scott R Ocoee , FL December 30, 2015 Appliance: General Electric Refrigerator GTH18XCT3RBB Ge Refrigerator Gth18xct3rbb: Ice maker line was leaking. How to replace Ice Maker Water Line. I replaced all the parts on the back of the refrigerator (tube from valve, water fill assembly, and tube clamp). There is a secondary water fill tube inside the freezer which comes loose when you take the fill assembly off. It fell into the cabinet and I had to remove the ice maker to ensure I got it back on correctly, took an extra five or less minutes. Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes