Dishwasher is very noisy during operation, with grinding or rattling sounds

Safety first: Unplug the appliance before inspecting internal components.

• Check loading: Ensure tall items do not obstruct spray arm rotation. Manually spin the arms to confirm free movement.
• Inspect sump: Remove filters and look for broken glass, bones, or other hard objects that may contact the pump impeller.
• Listen to pumps: Identify whether the noise occurs during wash (circulation pump) or drain (drain pump) to narrow down the source.
• Secure brackets: Check that side mounting brackets and leveling feet are tight so the cabinet does not vibrate.
• Replace pump if worn: If grinding persists and comes from the pump, the circulation or drain pump may need replacement.