Hi fellow 2nd geners. Enjoying this trucks looks, capabilities, and performance. A few months ago i picked up an all original (no mods) 08 with 110 k miles...good tires, rear air suspension rises and lowers albeit very slowly, came with new front brake rotors and pads. Relatively recently, the steering wheel moves back and forth at low to highway speeds, and the front drivers tire bobbles up and down when at highway speeds. The truck seems to lean when taking bends at highway speeds. Suspect: front struts? sway bar bushings or links? tie rods?