2010 Sierra Denali Current Lift/Leveling Questions

[Wacko2007]

Hi Fellas, Ive been a member here for some time- I owned a 2007 sierra Denali for a short period of time, I did have some bad luck and totaled the truck going on Vacation but thats not something Id like to talk about at this time....Thankfully everyone was okay and Im now back in another denali after owning a 2007 silverado and a 2009 ford F150

Yesterday I drove from NY to Maine for a 2010 sierra denali- I love the truck but i Do remember my 07 riding a bit smoother than this one.. The truck has air bags in there rear but i let all the air out..

So my question is, I believe this truck has some sort of leveling kit but i cant seem to figure it out and thats what i need the help with..

It seems to be sitting a lot higher than my 07 did..

The front measure approx 39''

The rear measures approx 40''

The drop shackles measure 4 1/2 eye to eye

The blocks measure approx 3 3/8

I will be posting a few pictures shortly, Im trying to log into the forum from my iphone using tapatalk and it wont seem to work