[Richard]

Hi Rick,

First lets make sure we all use the same terminology. The common words used to describe the HWH leveling system are actually printed on the control panel. Travel puts the coach in a mode where the ride height control valves control the height of the coach. Level puts the coach in a mode where you can automatically or manually add or subtract air from the air bags to level the coach.

Is it safe to assume you are in Level Mode? If so, pressing either the rear UP, or Left Up should add air the the driver side rear air bags. If that is what you are doing, then the first thing to check is to see if the Left Up solenoid in the six pack is getting power. It should be the solenoid in the upper right of the six pack, but be advised that I have seen two different versions of the six pack where the up and down solenoids are reversed.

It's easy enough to check. Put the coach in Level Mode. Have a helper press the left up button. If the solenoid is energized, a steel magnet will stick to it!

Let us know what you find, and we will go a couple of steps at a time from there.