Alexis N Coral Gables , FL June 15, 2020 Appliance: KitchenAid 30" Built-In Electric Thermal Convection Combo Oven KEMS308SSS00 Kitchenaid Oven Kems308sss00: The oven rack of my Kitchenaid oven was rusty, Does not work. How to replace Oven Rack. Replace the oven rack immediately. Two minutes. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes