According to GMC's advertising:
If you like to subdue the road through sheer size and strength, then you'll love Suburban by GMC - the vehicle that maximizes the meaning of "sport utility".
Offroad driving DOES NOT mean parking in your driveway.
I know that small 4x4 "jeeps" have a better going in tight places offroad. And they are FUN for sure. But this big thing is a pleasure. It's long wheelbase makes it stable in otherwise rough places and it keeps the CD player from skipping too. If I can't be comfortable, I might as well get out and hike.
Here's the first place I've gone: 
That first picture was at the trailhead. We got out and hiked. It wasn't a trail though, but a deer track. I know, I stepped in some...
Next?
The GPS receiver and maps in the onboard computer.