Kenmore Pro dishwasher is making a wining noise

Hi,

What is the model number of the dishwasher?

Verify that both the spray arms are rotating by placing both of them in a remembered position e.g. side to side or front to back, and then turning the dishwasher on.

Allow it to fill and then start to wash for a few minutes and then open the door and check if the arms have moved from where you set them.

This is just to prove that both arms have water being pumped through them by the circulation (wash) pump and not that one may not be turning or trying to turn and creating the noise.