GSB2800E*119 General Electric Dishwasher - Instructions

Looked up possible causes on your website. Website stated that more than 50% of time the cause was the piston and nut assembly. Removed the piston and nut assembly in bottom of unit behind screen on rear wall and saw that the gasket seal was completely gone . Ordered the part. took less than 10 minutes to install. Tested the unit and it drained completely. Thank you as i was looking at a more difficult repair if the pump had to be replaced.Repair cost less than $20.00.Before changing piston and nut assembly I cleaned the strainer and sump. disconnected drain hose and checked for blockage . i than checked your website that listed the piston assembly as the culprit more than 50% of the time. Thanks again

Took out old one and put in the new one. Not hard at all. Thanks

Removed the 7 screws from inner side of door; removed set screw from handle; removed inner door cover; pulled old part out; pushed new part in and Voila! Replaced all screws, no problem. Thanks for your great customer service!

I connected one end of hose to the drain using a hose clamp and screwdriver then connected the other end to the dishwasher using anouther hose clamp and a screwdriver..

Open door, remove lower wash rack, remove 4 screws holding screen in rear of inside tub with 1/4 inch socket. Unscrew piston and nut assy for checkvalve, sounds like a mouthful but it is only 1 part. Checkvalve has 2 small ears on it which allow you to twist it out, it has treads on it. Flapper on check valve flapper rots away and water pumps back into tub instead of being routed to drain line to garbage disposal. Part with shipping was just over $20.

Removed the 4 screws holding the filter screen assembly in the back of the tub. This exposed the Piston and Nut assembly which unscrewed fairly easily.
Replaced with the new part, put the filter screen assembly back in place ran the machine. The machine still stops with the blocked arm message - just not as frequently. The web researched fix with the piston and nut assembly replacement was obviously not the final answer. I am now out of options I believe except to bite the bullet and get a new machine. Any other suggestions are welcomed.

After two repair people were unable to solve the problem, I read similar stories in your forum and decided to replace the check value as a last ditch effort. Looking at your diagrams it seemed like an easy repair. Removed four screws with nutdriver and replaced value by hand. Ran washer three times and water drained completely. Still puzzled that this wasn't the first thing a repair person would check.
Websight very helpful.

took out 4 screws pulled piston out and changed put back together. very easy and inexpensive!! thanks

First I opened the dishwasher and removed the lower basket. Next I removed the 4 screws that hold the food filter plate in place at the back of the tub. Then I unscrewed the Piston/Check Valve assembly counterclockwise, located at the back center of the tub, by hand. I replaced the old part with the new one and reinstalled the filter plate. I ran a rinse cycle to verify that that all of the water was purged. Finally, I reinstalled the lower basket and resumed using my dishwasher.

Removed screen bottom rear andfound a plunger type part, unscrewed plunger and found it was distressed around it and did not close of a tight seal. Placed new part into location and dishwasher now proforms perfect...

Remove the back filter to access check valve assembly. Twist check valve assembly to remove, not significant deterioration of rubber cap. Install new assembly. Re-install filter. Super-easy and effective!

Remove shield in rear. Unscrew valve using hand. Screw new valve in place.

remove the screen at the back bottom of dishwaser. (4 screws). Unthread piston and and nut assembly for check valve....thread in new one.
Problem solved....no more water $10 part....no repair person !!!

First let me say, it's so easy even a caveman can do it. I removed the water out of the bottom. Then I removed the cover in the very back of the machine with a wrench. As soon as I did that, I could see the piston. Next, I twisted the white piston out with my fingers (this was the hardest part). I could see the piston had partially disintigrated. I ordered a new one, had it delivered in a few days, and put it all back in reverse. It took minutes. Thanks to the guy that posted his story, I was able to fix mine for $18.

I Just Open Door And Put Fill Cap In And Turn That It