This happened to my wife on the way home from work just weeks after we purchased this car with only 20k miles on it! It was a torrential summer storm and she was coming to a stop when a torrent of water absolutely poured into the interior from the front of the sunroof! It poured directly onto the center stack where the radio, HVAC, and the majority of the interior electronics live. What a short honeymoon with our NEW vehicle. The extended warranty service that we paid a small fortune for because it was ALL inclusive did NOT cover ANY water leakage!!! We were beside ourselves...thank God the dealership owner stood up and did the right thing and repaired the issue and the body shop TRIED to dry out the interior. It is still causing issues 3 years later. It smells mildewy when you open the sunroof and windows, and we are having assorted electronic issues with the center stack...NOT TO mention the incessant rattling from the headliner after the repair. That is another issue entirely. I'm really hesitant to buy another GM product because of the build quality issues of this car!