My Kenmore dishwasher makes a buzzing noise from the upper left side of the door. I have checked the food grinder and the pump motor and they are not making the buzzing noise. What inside of the door area could be making this bussing noise ?
Here are the parts
Replacement parts for GU1500XTLBE models | AppliancePartsPros.com
Here is the tech sheet
http://www.servicematters.com/docs/wiring/Tech%20Sheet%20-%208537797.pdf
It could be the solenoid that runs the dispenser.