Rob M North Olmsted , OH May 13, 2017 Appliance: Whirlpool Undercounter Dishwasher GU3600XTVB0 Whirlpool Dishwasher Gu3600xtvb0: Whirlpool dishwasher would stop moments after pushing start diagnostics error 6 1. How to replace Pump And Motor Assembly. Possible bad parts, per factory error code sheet for 6-1 errors was - washer motor, diverter valve, door latch switch. Most others have found the washer motor to be the cause, and it comes with a diverter valve and the entire sump plate that holds all the parts together. So I bought that combo after checking door switch continuity. It worked! Comments Putting the new sump plate in required a little Vaseline. It's a tight fit and wasn't seating completely when dry. If I knew how to check the diverter valve, I would have done that before ordering. 1/3 the cost of the combo kit. Guess I could have ordered both and returned one but the hassle of installing a part and then attaching the dishwasher to check if that was the broken part seemed not worth the extra money. Chat with APP employees was awesome. Patient and helpful people. 4 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes