Biancamaria P Chapel Hill , NC July 24, 2017 Appliance: Model WHIRLPOOL DISHWASHER Humming noise when dishwasher running Changed out pump and motor - took about 2 hours.Took some time to set new motor in dishwasher, due to tight gasket fit. Works great! 3 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 1-2 hours