2021 Cadillac XT6 SUV AWD

The Sunroof popped and shattered. I was on the highway with very light traffic - cars were at least 200 feet apart - when I heard a loud boom and then felt and saw the sunroof cover start vibrating. It was not the small smack of a rock - it was a loud pop and I wondered if my muffler had just fallen off the car. But when the sunroof started vibrating I knew that my sunroof was gone. I had not opened the sunroof that day, which is rare for me since I like to have the sun shining through, therefore, no glass fell into the car. Since there was no one behind me I do not think glass flew into traffic behind me. It was a normal, hot September day in Texas, nothing abnormally hot or cold. I have not changed or altered any stereo or other equipment in the vehicle.

Front brake vibration, alarming grinding/rubbing/screeching sound each and every time service brakes are applied. Dealer claims this is a known GM problem with no fix available. I have purchased two Cadillacs Xt6 and Xt5 May 2021. Both vehicles have the same problem. Wife will not drive the new Cadillac. Service bulletin published sbout this same problem, December 2020. Still no resolution, June 2021.