Elliott, I would start by parking the bus with the front slightly downhill and then hit the "auto" rocker switch and see what happens. If the bus doesn't try to level itself, then I would "exercise" the system by going from one rocker switch to another. Also, be sure the selector rocker is in the manual position if nothing happens in the auto position. If all that fails, then do the Jon stuff and see if you can locate the problem. Good luck, I bet it's something simple.