Why the lean?

With all of the suspension components that go into the truck, I imagine they just bolt these things up and send 'em. It's a truck, after all. It needs to be functional, not perfect. As long as it's within spec, it's fine. I bet if you took off every suspension component (shocks, struts, springs, bushings, sway bars, sway bar mounts, etc. etc.) and re-installed them, your lean might be different. If that's the case, I'd also bet that the lean changes after about 40,000 miles or so. Or, it's possible that the lean comes from tolerances elsewhere, such as on the frame or suspension mounting points. OR, as someone said, it's a "built-in feature." Either way, it's normal and don't matta. To me, it's part of the truck's personality. I wouldn't want to get rid of it. Others feel differently, which is fine, and that's why so many little spacers, etc. are offered.