Phillip V Long Island City , NY June 13, 2022 Appliance: Model GE FRIG Ice buildup in the freezer. Gasket on the door looked fine , and the defrost heater was also good. So I figured it had to be the defrost timer . Took ten minutes to replace. All good. Easy job. 1 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes