Replaced agitator coupling. This is apparently a common wear part and extremely easy to replace. Appplianccepartspros.com made it easy to find the right part the first time. I'll bet there are a lot of washer end up in the dump because this simple coupler went bad.Bascially is you can turn the agitator by hand you probably have a worn out coupler - less than $6 and a matter of minutes to install.