After filling and only when rinse commences a loud chattering noise begins. Somewhat like a circuit breaker making intermittent contact. It ends when I cancel and remains silent while the pump empties the washer. Any ideas? David

Sounds like a blend door actuator that has a stripped gear.

check back of unit as the concrete on the back may of been dislodged check not over loaded also the belt maybe loose or streached

Check your wheel bearings. when your wheel bearings start goin bad you will start to hear a growl like sound

My guess is that you have a dirty outdoor coil.

YES

The balance sensor is likely failed.

Check the shock absorbers and springs for breakage.

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if it's making a loud buzzing noise while its suppose to be agitating or spinning its the motor coupling

Bravo!

Sounds like coupling gears between transmission and motor... they did away with the belt and went direct drive with coupling gears. It can pump water out but nothing else. water pump is mounted to front of motor is why it will pump water out.