After a trip to sears service center to have some lifetime warranty shocks replaced, sears told me that the shocks weren't bad it was the torsion bars needed replaced and they didn't do that. I brought my truck to this Meineke Service center and they looked at it and said that the torsion bars weren't the problem. They said it was a combination of weak shocks and the wrong load range tire. They installed a new set of shocks and it seems to have fixed the problem. I will get a new set of tires next. While I was there a young man came in with a Volvo with problems. They checked it out and said that "I wont throw parts at it and take your money", then gave him the name of someone that could help him out. I give these guys 5 Stars......