David U Locust Grove , GA January 06, 2020 Appliance: General Electric Dishwasher GSD4020Y73BB Ge Dishwasher Gsd4020y73bb: Water would not drain from bottom of dishwasher. How to replace Check Valve And Body Assembly. Reviewed fixes related to the issue on the Appliance Parts Pros website and by process of elimination determined that the check valve had failed completely blocking the drain output. Ordered the Check Valve and Body Assembly as well as the Piston & Nut Assembly directly from the site. The parts arrived as promised. Replaced the parts and the unit is now working like new. Great experience. 1 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes