Questions on my 2016 2500 Denali

[Bnaylor91]

I’ve recently purchased a 2016 2500 Denali.  I’m new to the whole diesel and truck world in general.  My brothers have always had them so I dove in.

 

My truck sits higher than many when I park by them.  It has 275/65r20 Nitto EXO Grappler AWT Tires.  It doesn’t rub at all or even come close.  It does have the Air Lift Air Bags installed along with Super Spring add leafs.  I love the way it sets and looks but it rides rough as hell in the back.  I have done research and a lot of said this is common.  But it is extremely rough and I wouldn’t think it would be as bad as it is unless I have my race trailer hooked up.  I looked and it seems my keys are at full lock also.

 

What I am needing help with (I have included pictures)

 

-Does this truck have a body lift on it?  Stupid question but I don’t know what I’m looking for.

 

-Is there anyway to improve the ride?

 

-Will there be issues if I went to 35/12.5r20 Tires?  These say they measure at 33”

 

Any input is appreciated.  If I have this in the wrong section, please let me know.  Thanks

[davester]

There's basics like:

-turn down the front keys to get it back to the original height.  If you want it leveled, get a proper lift so the suspension geometry remains the way it originally is.

-if there's more than 75k miles on it, you might consider new shocks all around

-do you need the supersprings for hauling your trailer?  you might consider removing them if not.

-do you air down the airbags when not hauling

-lowering tire pressures helps a bit (so they aren't at the max pressure), course, remember to air up for hauling...

 

You might consider finding/getting the rpo codes indicating all the options your truck was built with from the factory.  This list used to be in the glovebox (might still be in yours), the newest trucks have some stupid way to get it now.