I had the same problem with a GWL11 smartdrive. The circulation pump had burned out. I was able to obtain a replacement part from a Fisher Pakel dealer for $75.00 and after installing it the washer worked properly again.
To remove the pump lift the tab which keeps it from turning and turn it clockwise. It will resist turning but apply a small amount of force and it will break loose and turn.
Selwyn Schultz, June 2008