This is driving everyone crazy. Three different shops and the dealership can't figure it out. When I hit a bump at highway speed, the whole truck starts shacking like a wheel coming off. Has anyone had this trouble before??
Yes. It's called the "death wobble" (for obvious reasons), and is usually caused by a worn track bar ball joint, at the frame end. You can verify this by running the engine, and having someone turn the wheels lock to lock while you observe the joint. There should be NO movement at all - ANY movement indicates a worn joint, and is the cause of the shake (the track bar is what prevents side-to-side movement of the front axle). Repairs include a new stock bar, a new aftermarket bar (Moog makes one), replacement joints from Lindstad or Luke's Link, or a replacement bar from DT Profab.
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