I think the mode shifter is working. The drum does not spin when in agitation mode. I I had checked the light already and it is blinking regularly every 1 second. I did remove the belt, ran the motor and it is quiet. Hand turn the drum and it is quiet. Replaced the belt, placed a piece of tape on the motor shaft and slowly hand turn the drum and there is a squeaking that corresponds to every motor rotation. As I turn the drum faster it becomes a clicking, again that corresponds to every motor rotation. There does seem to be a little play in the motor shaft. Is it possible that bad bearing in the motor could be making this racheting noise as the motor reverses during agitation?