kenmore dishwasher very noisy when running
 

Hi, our Kenmore dishwasher (Precision Wash QuietGuard Standard) started to get very noisy when running a few months ago. It's like a grinding sound from the motor lacking lubricant or something. Is it a very common problem for dishwasher of this brand or model? The dishwasher is only a little over two years old. Any hint? I have never tried to dissemble a dishwasher before. Considering the numerous, complex parts, it's a pretty daunting task for me. Your help is deeply appreciated!

Chris

update: now Kenmore dishwasher stopped working
 

After six months' noisy washing, this dishwasher finally stopped working, that is, no water spray. The noise is gone with it. Draining and heating seem to be still fine. Is the motor dead? What part to order? Do you have a detailed DIY instruction? Thanks!

Chris