Hi I've had my 2003 SS for 3 years and haven't had this problem before. We had heavy rain last week and again yesterday. The carpet on the passengers side was soaking wet and the inside of the sun visor was also wet so it must have been leaking through the seal around the power moon roof. There was a little puddle in the black plastic part up front when I moved the moon roof back. So is there anything I can do to repair this? Not sure if the gasket around the edge needs to be replaced or maybe armorall or something like that can swell the rubber and stop the leak? If anyone else had this problem how did you fix it?

 

My Grand Am sunroof was leaking, turns out one of the drains for the sunroof was plugged up (small hole that is may 1/4 inch big, used a pick to get the junk out from the opening out then sent a wire down to ensure the path was clean).

 

Thanks I think it is the drains.
Saw a couple of videos on Youtube showing how to blow them out with an air hose, just need to find a rubber hose to fit on the end of my air nozzle and clean them out.