Leigh C Chipley , FL June 13, 2020 Appliance: General Electric Dishwasher GSD3400G00CC Ge Dishwasher Gsd3400g00cc: Our GE dishwasher wouldn't drain water it just pooled in the bottom. How to replace Piston & Nut Assembly. This was a super easy fix. I just removed the nuts with the nut driver as shown in the video and used the pliers to take the old piston/nut assembly out and put the new one in. It took about 5 minutes and then the dishwasher worked as good as new. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes