So my dishwasher started making a very loud, obnoxious, continuous noise while running. It seems to fill and drain water without a problem, but during wash and rinse cycles, you can hear it throughout the house. My guess its the circulation motor that is fried if my research serves me correct? I don't think it's completely toast as it washes just fine and the water reaches all the way to the top without a problem. My questions are: 1) Am I right in replacing this part? 2) Seems like a standard motor. Are some of these interchangeable between brands and models? 3) Can someone supply a part number for me to make sure I got the right one?

Thanks in advance!