2012 E-15- blower motor not working?

The blower motor on my work van recently stopped working, nothing at any
speed. Then later that day on the way home at highway speed it came back
on with all speeds, though on high it sounds liked it was changing speeds
slightly. The next morning, gone again. During the day (again on the way
home) I got it up to high speed and it came back on again, still with all
speeds working. The next day nothing again and I could not get it to start at
all, even at high speed.
Every fuse inside and in engine compartment I can find that is remotely
related is ok. The fact that it worked at all points away from fuses and the
resistor pack but it was worth looking. The blower motor isn't hot or
otherwise showing signs that it is even trying. There is a relay in hi-voltage
block that labeled as Aux AC blower, would that be suspect?
Any ideas? My thought was that the motor was having trouble getting going
and the higher speed airflow gave it some help.

Thanks,
Drew