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

Safety: Disconnect power before reaching into the sump or accessing pumps. Beware of sharp glass.

Steps:

• 1. Inspect interior: Remove racks and check for loose items (spoons, small lids) that may contact spray arms.
• 2. Check spray arms: Spin them by hand to ensure they rotate freely and do not hit anything.
• 3. Clean sump: Remove filters and look for glass, bones, or hard debris. Remove carefully.
• 4. Access pumps: If noise persists, inspect circulation and drain pumps from underneath for debris in the impellers. Remove obstructions or replace pumps if bearings are noisy.