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

Safety First: Turn off power and water before accessing internal components. Beware of sharp glass fragments.

• 1. Check spray arms: Ensure spray arms spin freely and are not contacting tall dishes or racks. Reposition dishes as needed.
• 2. Inspect sump for debris: Remove the lower rack, spray arm, and filter. Look for broken glass, bones, or hard objects in the sump and remove carefully.
• 3. Check circulation pump: From underneath, remove the pump and inspect the impeller for damage or foreign objects. Replace the pump if the bearings are noisy or the impeller is damaged.
• 4. Inspect drain pump: Remove and check the drain pump for debris. Clean or replace as needed.

Persistent loud noises after cleaning usually indicate a failing pump that should be replaced.