Gayle S Aurora , CO February 11, 2023 Appliance: KitchenAid Dishwasher KDTM404ESS3 Kitchenaid Dishwasher Kdtm404ess3: Warped heat element melted spray arm. How to replace Arm-Spray. Replaced both the Heating Element and the Spray Arm. Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes