the torsion bars are under the truck, from the middle at the crossmembers to the front suspension. They can be turned for more height, and also for less height. They are designed to suspend the vehicle but keeping the tension in a rotation, verses your coil springs.
Read dark's torsion bar bible
In the first pic, look slightly down and to the right of dead center. There is a hex shaped bar (but you can only see the end) goin into the back of the LCA. i would highlight it on paint or something to show you, but ur a big man, you can figure it out from my description.
A forum community dedicated to GMC and Chevy full size owners and enthusiasts. Come join the discussion about Silverados, Sierras, and other full size trucks performance, modifications, suspension, lift kits, tires, maintenance, and more!