I have a 2014 Reflection. The wardrobe slide upon activation moves about 4 inches and stops. You can still hear the motor running but the slide stops moving.
I met the rep for GD this wknd at the rv show in Boston one of the things
He mentioned to me was that once you either open or close the bump not to stop
Until it was fully extended, otherwise you'd have issues
He did not go into detail about the issue but maybe that happened to you?