Air Suspension - How do I know when it's bad?

[Blade69]

My previous two SUVs where a 98 Chevy Blazer and 2005 Jeep Grand Cherokee. My JGC was a little on the bouncy side as from what I've learned that's just how Jeeps are. I've had my 2004 4.8is for about a month or so and I've seen quite a few posts about the air suspension going bad in them. Other than the computer telling you, will the suspension ever go bad without you knowing. I ask because when I pull out of my driveway, there's a little bit of a curb to get to the street, and it when I go off the curb, there doesn't seem to be much bounce. I kinda feel like I did when I was in my Fiero....lol. So is it normal for the suspension to be that stiff? I was thinking that since it's kinda cold, and with it being air, it get's a bit dense and that is the cause.

It rises and lowers just fine from what I can tell. I just want to know the warning signs to look for if there are any. Thanks.