Quiet Dishwasher no longer quiet

Hello. The drain motor is what runs at the beginning and end of the cycle. You can take off the drain impeller cover, which is on the left side of the sump area under the filter screen. You will need a torx head screw driver which can be bought at any hardware store. The tip kind of looks like an astorics/star. This may be hard if you don't know what you are looking for. Any way take off the cover and see if something is hitting the impeller. If not then you will need to replace the drain motor, which can be removed, not very easily though, from the bottom front.
Warning: It can be hard to get the motor to install properly with out it leaking. You will need to make sure that the "O" ring is properly installed onto the the pump and you may need to put some liquid soap on it (the "O" ring) to keep it from binding.