Dishwasher makes loud grinding or rattling noises during wash.

Safety first: Disconnect power before reaching into the tank or accessing the pump.

• Check for loose items: Inspect the tank for utensils, broken glass, or other objects that may be hitting the wash arms.
• Inspect wash arms: Spin each wash arm by hand to ensure free movement and that they do not contact racks or tank walls. Replace worn bushings or arms if necessary.
• Access wash pump: Remove the pump cover and check the impeller for debris. Clear any obstructions and inspect the impeller for damage.
• Listen to bearings: If a loud grinding persists, the wash pump motor bearings may be failing. Replace the wash pump motor or complete pump assembly.
• Verify water level: Ensure the tank is filled to the proper level to prevent cavitation noise.