I'm sorry you are having this problem. The information you have received is good. Unfortunately, the model number listed is not complete and I'm unable to access any information. However, if a fan motor quits, it will cause the freezer to stop cooling. Now, if the motor in question is the evaporator motor, the freezer will usually build up a heavy frost on the back panel first. If it's the bottom condenser fan, the compressor will overheat and trip out on the overload. I hope this will help you. For more assistance, a complete model number will be needed. Thank you for using Manage My Life.
If you do not feel confident repairing this problem yourself, then you can have it repaired at your home by a Sears technician. Here is a link for the website:
Sears Home Services