Dishwasher is very noisy during operation; grinding, rattling, or humming sounds are heard.

Safety first: Disconnect power before accessing the base or pump area.

• Check loading: Ensure tall utensils or pans are not protruding into the path of the spray arms. Rotate spray arms by hand to confirm free movement.
• Inspect sump: Remove filters and look for glass, bones, or other debris in the sump that could contact the pump impeller.
• Access pumps: If noise persists, remove the bottom panel and inspect both the circulation and drain pumps for debris or worn bearings.
• Tighten fittings: Check that mounting brackets, side panels, and the base are securely fastened to reduce vibration noise.
• Replace noisy pump: If the circulation pump is excessively loud and bearings are worn, replace the pump assembly.