Last week I wrote about having a problem with the HWH levelers that would not retract...we have been parked at a different location for a week...the levelers went down when we got here, but tonight I ...
I'm assuming the parking brake was on and the transmission was in natural. At this point, I'd suggest checking the relay. My relay was in the electrical bay and would occasionally stick before being replaced.
Finally, check the ground wire to the chassis from the pump. Just take it off, clean it up and reattached it.