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Water leak from cabin interior roof light
this is the cabin light located in the middle of the front seats between the driver and passenger seats. Lots of rain today and the car was parked for about 45 minutes nose pointed downhill during the downpour. Then when I started to drive it, I noticed the dripping. Just 8 good sized drips and then it stopped. When I got home, I opened/closed the sunroof; checked the drain channel , pretty much dry, no debris so I doubt if that is where the water got it. HOWEVER, located directly about the cabin light in question is where the OnStar antenna is mounted atop the car. I dried all the water off around the antenna base then applied some medium to light downward pressure----water bubbled out from under the base. I am thinking that this is where the water is getting in---a faulty seal or something? Anyone else had this problem? This is the second water leak we have had with this vehicle and this one is probably not going to be covered by warranty. I am not happy. Thanks for your help.