[SIZE=3]I have a whirlpool GU1100XTLQ1 (6 years old?) makes noise (a loud motor - grinding kina of noise) when running; no noise when filling or draining; when the wash cycle completes dishes are clean; I removed the bottom spray arm and screen and cleaned up the scale and gunk (coffee beans, string, tape) put it together and runs with the same noise;. SO pump? Impeller? Grinder? Any advice on how to determine what to replace?[/SIZE]
[SIZE=3]Thanks[/SIZE]