GM calls them Jounce Stops, and yes they are supposed to be close to or resting on the stops at ride height. Torsion bar ifs suspensions have little to no natural rebound so, unlike a coil spring or leaf spring setup, the suspension needs quite a bit of support and/or dampening to maintain ride quality and performance. My truck is sitting on compressed z71 stops and I have bilstein front shocks that feature an integrated bumpstop to further aid in controlling the front end. Regardless of suspension setup the front bumpstops should be addressed, I prefer the z71 bumpstops and have had the best luck with them thus far...really aids in handling as well.