The most likely culprit is either the compressor has died or the shocks have worn out and have holes. You can easily replace them with parts from
https://www.arnottindustries.com/
Autoride doesn`t lift the truck, It has sensors that fill the air shocks returning the ride to level when you have a load in the back. There are no air bags up front so there is no lifting going on up there. You can also replace all four shocks with regular gas shocks if you want to eliminate autoride, I used billstein 5100`s after my air compressor died for the second time and i just wanted it gone.
If you haul a lot of weight you can either replace your rear coil springs with Z71 springs or get helper air bags that install inside the coils.