I'm recently bought a new 2012 Sierra 2500 HD. So far love the truck. I want to raise the front end to level out the truck. I know this can be done by adjusting the torsion bars. Two questions. Will this voyed my warrenty and will a GMC dealer do this adjustment ? I could do this myself but it would be easier for me to have the dealer do it. Any thoughts. I was going to call my dealer but would like some info from others.
Thanks
JIM
Thanks
JIM
