The dishwasher is not draining and all drain lines and air gap are clear and clean. I took the drain line off the air gap and used my wet vac and sucked all the water out of the dishwasher. I cleaned the air gap so all that should be fine. I did have a broken glass in the dishwasher and there were pieces of glass on top of the drain screen at the back of the unit. A few months ago the dishwasher was making a grinding and squealing noise while running.

What should I check next? Should I just go buy a new one, or is there a cheap and easy fix? Thanks for your help.

Sincerely
Glenn