NHTSA Complaint #11427504 — 2018 CHEVROLET EQUINOX

I was driving 55 mph heading to a friends for the weekend with another one of my friends and my dog. It started raining and it was scaring my dog to see the rain drops on the sunroof so I closed the shade. About 15 minutes later there was a loud constant sound almost like a warning so I looked at my dash, radio ect to see what was going on and about 3-5 minutes after the loud constant whining sound started there was a loud boom!! sounded like a bomb or gunshot. I pulled over and got out to look and found a hole in my sunroof. By looking at it you can totally see that the pressure or blast was from the inside as the glass on the sunroof was pushed outward. I took this to a GM dealer and the service manager was rude and kept saying it was from something in the roadway which it was NOT!! The road was clear and it was still light out. Besides what was that sound from then??? This is unsafe and the outcome could have turned out way worse.