Product review (5 stars): New life for an old dishwasher!
Repeated C1 trouble codes on my GE GSD4910X72AA were solved with the new pump and motor.  I ruled out all the other possiblities and thought the dicey looking diverter in the pump housing must be the cause.  Great price on Amazon, so I gave it whirl.  Easy install, fixed my problem AND the dishwasher is now quiet!  Dishes are cleaner too.  Beats buying a new machine.