How I fix my Lift kit problem.Can you give me advice

Hi .Car haulers are Super Man
I have brand new 2022 Peterbilt car hauler.
but when I use lift kit My Truck tractor suspension going down loosing air and Trailer is goin up.It was before both goin up to raise.
Now is Tractor suspension down and trailer is up.
Do you have any experience this problem.
.

 

New truck, has it ever worked properly?

If no, most likely the pilot valve is plumbed incorrectly, with the lines from the leveling valves switches.

If it used to work and now doesn't, check the arms of all the leveling valves to ensure they are still properly in place. If they are, most likely have a bad pilot valve.