So, I'm aware this is an old thread... But hopefully someone still sees this. I have an 09, well out of warranty obviously, but I have the same problem you all are describing. I've replaced my struts, control arms, tie rod ends, ball joints, hub assembly's and I'm waiting on a new stabilizer bar. I have gone over every nut and bolt, put them to factory torque, replaced almost everything I can think of and I still have this problem. Seems to be getting worse but then goes away completely for a day at a time, but yet again, always comes back. I've greased, regreased, and tightened everything I can find and even added ball joints with a greasert so I can make sure they stay greased... What else can I do? Anyone? Bueller?