Michael C Pearl , MS November 15, 2019 Appliance: KitchenAid Undercounter Dishwasher KUDP01FLSS6 Kitchenaid Dishwasher Kudp01flss6: Dishwasher was making a grinding noise. How to replace Affresh Dishwasher Cleaner. My KitchenAid dishwasher is 14 years old and no problems until now. It was making a grinding noise that was very annoying while running. In determining what the problem was, the only time that I could hear the noise was when the circulation pump was running, it seemed to reason that the circulation pump was the problem. The circulation pump is the pump that pushes water onto the dishes to clean them. Since dishwashers have two pumps, I was hesitant about this being the problem because my dishwasher was still cleaning the dishes. After finding this website and trying to narrow this down through my troubleshooting efforts of the probable part(s) that I would need, this website was very helpful, in that it let me know that this particular part was the problem most of the time. I called Appliance Parts Pros and the tech was very helpful. He said that the bearings were probably worn and that's what I was hearing. I had Appliance Parts Pros expedite the shipping because I'm a DIY guy with a wife that gets nervous about me finishing a project. I got the part and put it in. PRESTO! NO MORE GRINDING NOISE! It made my wife happy for a minute or two and that was the goal, besides saving a couple of hundred dollars. Thank you Appliance Parts Pros! Do-It-Yourself Rating: Repair Time Estimate: 1-2 hours