Afternoon sorry for your trouble. anything happen that might have anything to do with this?
We are a rental dealer and my tech was re-calibrating the leveling system. He "manually" dumped the air via the button on the dash. Once he re-calibrated the system the suspension wouldn't build air.
sounds like the releasevalve is stuck open or the leveling valve has become disconected from the axle or on the valve its self.
wouldn't we hear air pushing out if the valve was stuck open?
you may but if the vale is stuck in the release mode it is closed off the air supply. i would check the neway leveling valve that is attched theframe and the rear axle. Jim!!!
you can probablyy use the leveling jack to get under the vehicle to check the leveling valve.
if you need firther assistance please get back too me. Jim!!!