2018 Tahoe LS rattle under headliner

[sd172]

I'm experiencing a very annoying rattle that comes from the highlighted area (possibly air duct?). It only manifests itself between 20 and 40 F of outside temperature, and completely disappears during warmer months. Did anyone have similar problem and how did it get resolved? I can still bring mine to the dealer and attempt to fix it under warranty, but there's a risk of them creating more problems when trying to fix this one.

 

[OR VietVet]

When the rattle is happening can you touch/push that area and the noise stops?

 

[sd172]

When the rattle is happening can you touch/push that area and the noise stops?

It does, and there's no rattle when you are holding it. I think I might have found the reason after some research:
https://chevroletforum.com/forum/tahoe-suburban-25/2011-tahoe-headliner-rattle-fixed-38736/

 

[OR VietVet]

Yep. That was a guess of mine or some hardware used to hold headliner in place that would run across there. I did not know about the foam or the fix though. Mine was just gonna be a WAG.

 

[sd172]

Yep. That was a guess of mine or some hardware used to hold headliner in place that would run across there. I did not know about the foam or the fix though. Mine was just gonna be a WAG.

Even a WAG is better than nothing. When I read about the temperature effect on the foam it kinda made sense to me. When I test drove and bought my vehicle in August of 2018 there was no rattle whatsoever.
I scheduled an appointment with the dealer to get it looked at. Will see how that goes.

 

[OR VietVet]

The only reason I thought about it was when I lived in KC, Mo. and in the winter there I ran shops ad we had a Mercedes Benz wagon come in with the same problem above the back area. It was the same repair to fix that. That was about 28 years ago.

 

[hcvone]

One of my Escalade's had a rattle there, turned out to be a lose electric wire harness that was not wire tied, it took them 3-4 hours to remove the headliner, UNDER WARRANTY, and 1 minute to fix the problem forever. Never heard it until it until winter time