Wind Flutter

[Ron Levy]

I have a 2023 Sierra 1500 Denali. The wind flutter is significant. I've opened both rear windows and the back cab window, it still flutters. I then open the front windows and it doesn't go away until everything is open. My dog rides in the back seat, and I can't leave a window down for him (or both windows) without the flutter issue.

 

Does anyone have any ideas? I was wondering if wind deflectors would make a difference, or??? Unless it's really hot, I prefer to open a window over a/c, but this situation makes it a problem. 

 

Thanks!

Ron

[Phantom 4D]

1 hour ago, Ron Levy said:

I have a 2023 Sierra 1500 Denali. The wind flutter is significant. I've opened both rear windows and the back cab window, it still flutters. I then open the front windows and it doesn't go away until everything is open. My dog rides in the back seat, and I can't leave a window down for him (or both windows) without the flutter issue.

 

Does anyone have any ideas? I was wondering if wind deflectors would make a difference, or??? Unless it's really hot, I prefer to open a window over a/c, but this situation makes it a problem. 

 

Thanks!

Ron

It happens on a lot of vehicles. 

[RandyR]

When I had this issue on my 2019, I had my son get in the back seat and listen.  He discovered the bottom edge of the rear window was not even touching the frame, there was literally 1/4" gap, but only underway.  I took it to a dealer and they fixed it.  Told me, "It's fairly common, the surface at the lower edge of the window opening wasn't properly prepared at the factory and a lot of the windows come loose at the bottom."   It makes a whisting/futtering noise.

 

[Ron Levy]

Randy, Thanks so much for that. It falls into the category of forever to figure it out and a minute to fix. I will check this out and post here what I find out!

[jaxcam02]

Slightly Crack the front window opposite the window of the rear one that you put down. Works for me every time. If I have both rear windows down, I just Crack one of the front windows. 

[Grumpy Bear]

14 hours ago, jaxcam02 said:

Slightly Crack the front window opposite the window of the rear one that you put down. Works for me every time. If I have both rear windows down, I just Crack one of the front windows. 

 

This ^^^^

[Ron Levy]

I just had the dealer look into it. They said the window issue described above by Randy wasn't the case in my truck. So not sure what is next. Separately, I had a knocking sound behind me when I drove. I thought maybe it had to do with the window issue Randy described. It turned out there was an issue with the rear leaf spring. They did have to order a part, but it was a simple fix. I do have to give credit to the service department as the only way they found it was to put microphones under the truck to isolate where the sound was coming from when it drove. I really appreciate their patience in the discovery process!

[MrMagloo]

Thanks for mentioning the leaf issue.  I have been hearing the same thing lately and was imagining the spare tire was loose.  I'll look toward the left rear instead.  Thanks

[Jus Cruisin]

I can put both fronts down and lower the rears about 3 inches and get zero buffeting at highway speeds. Doesn't matter if the moonroof is open or not.