I have a Bosch dishwasher we had the garbage disposal replaced and the plug was not removed, so we ran the dishwasher and the water did not pump out, so I knocked out the plug and ran it again and the water pumped out. Since ( It might not have started right away but soon after )that time the pump makes a squealing sound at the end of the cycle, one little squeal in the middle.The water does pump out. I think it is the drain pump. I checked at the place I bought it and they said they changed something with that model. I checked on your site and they say if it has a 9 impeller vanes order this part if it has 4 impeller vanes order this pump. Do I need to take it out and check it? Do you think it is the pump? It used to be a quite running machine. Thank you.
Fred