2021 Yukon Denali. It's only about 82 degrees outside. Love my vehicle but while backing into parking space and putting into park all of a sudden it sounded like someone dumped a load of gravel stone on the back of my vehicle. I never use the glass release on the liftgate and it just blew out into pieces for no apparent reason. Yes insurance covers it but the thought of, "what if", the glass had come into the third row seat? Crazy. Of course all my groceries had to be removed while outside because glass was in the bags. There should be better testing on every glass put into new vehicles especially when they cost upward of a hundred thousand.