I've been trying to isolate a dash rattle on my new '19 Silverado LT Crew Cab RWD (edited).
Facts:
Rattle starts when going over ~70+ MPH.
Rattles more consistently as speed increases.
Sounds like metal clanking - almost like a loose screw in a metal bowl.
Suspicions:
Probably related to wind.
May be related to internal temperature - the rattle is more consistent as the drive time increases.
Things I've done so far:
Dropped it off to a Chevy Dealer Service Center for 3 weeks - they were not able to isolate it. I picked it up because it was getting ridiculous. Will be dropping it off again when they have a loaner car ready on Dec 13th.
Removed driver side door panel. No luck.
Verified it wasn't the hood latch cable.
Verified it wasn't the side mirror.
Taped driver side door seams from outside.
Taped front window seams from outside.
As you can imagine, this rattle is very hard to isolate because you have to be going quite fast to hear it and it's also more consistent as the drive time increases.
Here is the link to the video: https://photos.app.goo.gl/WVgswQrfW5hhPwSQ7
I'm so perplexed.. Any ideas on what this could be??
Also, any pointers to a good mechanic forum would be greatly appreciated.
