The 4 most common part(s) or condition(s) which cause the symptom Dishwasher making noise are listed below starting with the most likely. Check or test each item and watch any available videos.
RepairClinic Item # 1565470
If the dishwasher is loud during operation, the drain pump might be defective or might have some debris in it. This is a common problem.
RepairClinic Item # 1940279
If the dishwasher is loud during operation, and the noise is a continuous drone similar in speed to the circulation pump sound, it's likely that the circulation pump motor bearings have failed. Once this happens the circulation pump will have to be replaced, the bearings are not repairable.
RepairClinic Item # 419194
The wash impeller is a small, plastic blade. The motor spins the impeller forcing water through the spray arms to clean the dishes. If one or more blades has broken off of the impeller the dishwasher is loud. The impeller can also scrape against the pump housing if it is damaged, warped or bent.
RepairClinic Item # 1378823
The water inlet valve is an electrically controlled water valve. When it is new, the water inlet valve is very quiet. Over time, the diaphragm inside the valve deteriorates and deforms. This deformation interacts with the water rushing in and can cause a loud vibration, buzzing, squealing or other noises. If the dishwasher is loud during the filling cycle, replacing the water inlet valve may solve the problem.