I diagnosed the noisy motor by removing the dishwasher from its cubby hole and reconnecting the plumbing and electrical lines. We next did a cycle and I felt the motors during the noisy time. This did not work out due to the overall vibration of the unit. I next waited for the noise again and unplugged some electrical connections. Nailed It. I traced the wires back to one motor, and was able to locate it on the parts diagram. Two days later the new part was in my hands. It took about 90 minutes to replace the motor, which may be excessive, but I wanted to make sure that I created no problems while fixing the first.