Do you hear a buzz noise from behind the unit when trying to get water?
Do you have a model number from the unit. It should start with 106. It will be located inside the fresh food section.
Look at item #16. Remove the drawers in front of this tank and using a hair dryer on low. Heat up the bottom of the tank. Stop and check for water every so often. If it frees up run about a quart of water through it. Make sure your controls are set correctly and call sears back and ask them if there is a freeze kit that goes to your model.
Thank you and let me know how it turns out or if you find this did not work.
Try this link
Sorry, There is a cooling tank behind the crisper and deli drawers that have a habit of freezing. Let me know.