Dishwasher makes loud grinding or rattling noises during wash or drain.

Safety first: Disconnect power before reaching into the tub or sump.

• Check loading: Ensure cutlery and dishes are secured and not protruding into the path of the spray arms.
• Inspect spray arms: Spin the arms by hand to check for contact with dishes or racks. Adjust loading as needed.
• Clean sump and pumps: Remove filters and inspect the sump for glass, bones, or other hard objects. Remove carefully.
• Access pumps if noise persists: Lay the dishwasher on its back, remove the bottom panel, and inspect both circulation and drain pumps for foreign objects or worn bearings. Replace the noisy pump if necessary.