My dishwasher (installed and functioning for ~3 years now) had water standing after the last wash cycle, and it made a loud humming/grinding noise during the end of the cycle.
I emptied the dishwasher of dishes, removed the filter basket near the drain pump (it was clean), started a new cycle with no dishes. It continued to make that humming/grinding sound and wouldn't pull the water out. Checked the lines to the sink and they were all clear
I used a shop vac to get the water out and then tried again to start the dishwasher, same results. Followed the video on how to remove the drain pump and measured continuity and it was good. Plugged back in the wire-harness and turned on the breaker (with the drain pump sitting out of the machine) and the impeller fired right up and spins fine, but is making that humming/grinding noise.
Other than ordering a new pump, anything to look at first?
Attached is a video of the pump running while outside of the dishwasher when i start the dishwasher.