Model Number: PDW9280N00SS
Brand: GE
Age: 6-10 years

My GE Profile dishwasher PDW9280N00SS makes a loud noise as soon as the main cycle is finished / when the drying cycle starts. But it also makes the same noise if I select no added heat. I also found deteriorated black plastic pieces at the bottom of the dishwasher close to the front door. The dishwasher also doesn't clean much anymore in spite of cleaning the entire dishwasher not too long ago. What is wrong with it? How can I fix it?