There's a technical service bulletin on this. The issue seems to be the intermediate shaft. I've heard it doesn't need replaced but needs to be lubricated. Pontiac sells a 15 dollar kit to do it, but it's a 1.5 hour job. Either way it apparently doesn't solve the problem forever. The sound comes back. I'm told it's an annoyance, not a safety issue, but i'm not a mechanic and so don't take my word on it.
Wednesday, March 12th, 2008 AT 9:41 PM