Here is that post if you didn't get it:
How old is this unit? I ask because it is showing the clock to be no longer available for purchase. I can't check additional suppliers OR stock in Sears because you are in Canada but the part number you will need is 318185720. You can call Sears Canada at 800/469-4663. I really hope they have one, or a substitute, in stock for you. Just have your model number ready so they can check for an alternative. Let me know if you have any other issues and I will try to help you to the best of my ability.