Thanks KB. I'll drive it a bit this week to see if any other noises pop up. Yes I've searched around the sites, and most a not good stories on the pano roofs (guess that's why I'm not seeing many of these installed on G6's). What scares me is this is a pre-own with 30K on it (2006), so I'm wondering either they tried everything and nothing worked, or these drove the car over the past 2.5 years with all the rattles(hard to believe). I"ll give the dealer a few kicks at it, and if unsuccessful, it'll be traded in by YE. Also with the Pontiac brand being phased out, wonder how serious the dealers will be to fix the probs.