Noisy Kitchen Aid Dishwasher

I have a Kitchen Air KUDS01DLSS2 dishwasher and lately it started to make annoying noise. We have to leave our kitchen in order to run. I opened the plastic portions inside the DW and cleaned some minor debris but no help. Could it be the motor & pump or just the motor? Can someone please walk me through how to get access to the pump/motor. I cannot pull out the DW from under the counter.