I also beieve that this is a GM problem. Sucks huh? smaller diameter shock bodies. I have read a few posts over at FSC about this. I do not remember the exact cause. Doesn't happen to mine though. BUT my tires just rub the shock when I am turning and hit a big dip. That is also how I noticed I needed to "trim" the back side of my fender. The tire caught and crushed it a little. Got a saw and took out an inch or so, problem solved.