[Hmmm2]

The sound you are hearing is the same thing I am hearing in mine.,, like a binding/grinding. I couldn't think of the right words for the sound when I described mine as a squish/crunch. I sense that mine is coming from the rear right. Mine had been intermittent, but was now at every long stop (not quick stop). I had OnStar do a diagnostic check before taking it in and they didn't see any problems. I began hearing sound this every so often beginning around 12,000 miles. I now have 13,000 and it wasn't intermittent anymore...just all long stops. Per 'StarsNBars' suggestion, I left a message for the dealer rep that this is something not right and I want it corrected before I pick it up. He hasn't called me back. Surprised? I'll post back here when I hear what's up with mine. Please do the same with yours if you get any answers!