Randolph F San Rafael , CA January 06, 2015 Appliance: General Electric Dishwasher GSD5330D00WW Ge Dishwasher Gsd5330d00ww: Check valve (piston and nut) in dishwasher jammed and the water wouldn't pump out of the tub. How to replace Piston & Nut Assembly. I replaced piston and nut assembly. Very easy fix. Video on your website was very helpful. 1 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes