Bradleyac

hate to resurrect this thread but GM I swear, my 21 suburban has major booming Buffeting, the booming itself would happen even from closing the driver door. That's when I discovered the roof was fluttering on the outside bad every time I closed the door. My car is out of warranty, pulled the headliner down to discover roof bows were not attached. GM is an absolute joke that they still didn't fix this!! IT was like this on all 5 cross bows, NON OF THEM WERE ATTACHED you can see the mark on the ceiling the gap and then foam I got the flexible foam from 3m to fix it, and sound deadend the roof which helped a lot but still slightly flitters causing booming in the vehicle, im so annoyed!!!

Same issue with my 2016 Tahoe LS black with 56k miles, I noticed it about 8 months ago, now it’s look like a 22 year old Honda that sat in the sun everyday. It’s frustrating as clay at every few months and manually wash. The paint has so much oxidation. Bought it CPO with 42k miles about a year ago, my 2016 Chevy volt has absolutely no issues.