I hope I can be clear about this. The dishwasher is not draining at all. (checked the piston and it is fine) On the ‘body valve and check assembly’, I unscrewed the black piece that the drain hose attaches to. (see the picture on your website here: part #560 http://www.appliancepartspros.com/partsearch/model.aspx?model_id=209588&diagram_id=21261025#d21261025
The flapper check valve inside there is broken off. Question: Is this the correct replacement part? The picture is red, but it looks like the piece that is broken - mine is black. I am sure the color doesn’t matter, but just wanted to make sure I order the correct part. Part Number: AP3669275
Made by GE page: http://www.appliancepartspros.com/Appliance-Parts/GE-Flapper-check-valve-item-number-AP3669275.aspx
Thanks for your help! I appreciate your site soo much! 
Julie