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

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

• Inspect interior: Remove racks and check the bottom of the tub for loose items like utensils or glass.
• Clean sump and filters: Remove filters and inspect the sump for hard objects. Use needle-nose pliers to remove debris.
• Check spray arms: Ensure spray arms spin freely and are not contacting tall items in the racks. Replace if cracked or wobbling excessively.
• Inspect pump: If noise persists, access the circulation or drain pump and check the impeller for damage. Replace the pump if bearings are noisy or impeller is broken.