Thank you for reporting your rear window explosion. This may make an easier case to get my window covered under warranty. I have just 28000 miles on it.
This just happened this morning for me. Same thing. 2019 Silverado LTZ passenger side rear. Driving with temperature about 40 degree F in southern NH. I had an issue a couple months ago with sputtering and arcing sound with rear defrost energized. It was fixed under a "service bulletin". Now this today.