I haven't seen this directly addressed in other threads.
2002 GMC Denali XL
Safari 22ft - 300 tongue/3100 TW
The Denali has a built in, airshock ride system that compensates for loads. It works pretty well, so well that I haven't seen the need for a WD system in the 4 years I've been towing. Sway has never been an issue and I've managed to avoid a sagging middle with load balancing.
But I'm finding that I'm carrying heavier loads in the TV lately and putting more stuff in the AS too for festivals and longer trips.
When the car is not running, the shocks take on the full weight of the gear in the car and the load on the tongue and it sags down. When you start the car up, the load leveler kicks in and airs up the shocks to compensate.
I'm looking at getting a Reese set up and I can size it to my needs. My question really is...
How should I set up the WD system when factoring in the air ride system?
Should I turn the car on and let it level out WITHOUT the AS attached, leave it running then attach the trailer, then set the bars?
Should I turn the car on with the AS attached, let it level and then set the bars?
Should I leave the car off, attach the trailer, set the bars and then turn the car on?
Any and all insights are welcome.