This is correct. The airlift bags are only designed to hold a max of 35 PSI in each bag. The factory air compressor would way overload them.
@PLohr
As to your replacement shocks question it totally depends on what you’re going to use the vehicle for. If you’re not doing any sort of towing then a standard shock and resistor worked into place for the auto ride sensor isn’t a bad way to go, it’s way cheaper, however I believe changing out the coil spring is also required on that solution.
If you plan to tow at all replacing them with the arnott air ride shocks is 100% the best way to go. It keeps the air ride shocks and the soft and stable OEM ride quality, plus if your towing it keeps the auto level function which I think is a major benefit when towing.
I have a 2006 xl Denali with factory air ride. I replaced my blown factory air shocks with the arnott air shocks and couldn’t be happier. It rides really well. Their shocks are the best. I also have a set of airlift springs installed in my rear coil springs as I do a lot of towing and the airlift bags help tremendously. My truck is incredibly stable when I’m pulling the near 6,000lb sea ray speed boat that I help with. I run air to them from a separate compressor.