Michael D W Camdenton , MO February 28, 2016 Appliance: Whirlpool Undercounter Dishwasher DU1055XTVD0 Whirlpool Dishwasher Du1055xtvd0: Whirlpool dishwasher loud vibration hum. How to replace Dishwasher Food Chopper. After doing some research on my noisy dishwasher, I narrowed it down to either a broken chopper assembly or a bad circulation motor. After chatting with Robin, the APPros tech person, she confirmed that my chopper assembly was broken. I ordered the new chopper, paid for the cheapest shipping and was absolutely shocked to see it arrive the next morning!! I went ahead and installed it, and ran the Glisten Cleaner. Not only did the dishwasher run quiet again, the Glisten made it look like it was brand sparkling new inside. 1 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 1-2 hours