[pestes]

One, notice the line coming out of the HCV is singular and tees into two lines. One feeding the left travel solenoid and one feeding the right.

Ugh, there goes my working theory.

The only way that the right can stay up and the left down is if the left travel solenoid does NOT open.

Except that turning the key off to disable travel mode stops the front left from falling any further. I suppose this could only be true if the dump solenoid is getting power in travel mode, which it obviously shouldn't. However, I would also expect the air escaping to be coming from the exhaust port on the 6-pack. It is not. It is coming from somewhere further under the coach.

I am about to head up to do some troubleshooting.

I have 2 working theories now.

Theory 1 is that the travel solenoid for the right side is stuck closed and not opening. The HCV is dumping air, and because the right side is all the way up, the HCV never reaches a point where it stops exhausting. But the left side is the only airbag connected as a result of the stuck solenoid, so it only dumps from the right.

Theory 2 is that I have a double failure scenario. A stuck travel solenoid on the right side and a faulty HCV.

I'm about to head up to the coach for some troubleshooting.

A couple thoughts on tests:
Start from fully dumped and see if the right side comes up to travel height.
Swap the 2 travel solenoids to see if the problem switches sides. After cribbing the front of the coach, of course.

Beyond that, it will be verifying that the proper solenoids are powered in each mode.

Fingers crossed for the stuck travel solenoid.

My rear air leak is also now fixed, so I can eliminate that extra odd variable. It was actually a cracked brass fitting, not the valve itself.