Whistling noise around sunroof

[Moonlite112837]

Hello! I have a ‘22 Tahoe Z71 Since opening my sunroof there has been a whistling noise that gets really loud & annoying. I have carried to the dealer who advised it was normal as it was due to the roof racks making the noise?? Funny it never did it for months after purchasing & driving. By chance anyone else heard of this?? I’m gonna take the roof racks off & test their theory this weekend. Thanks for any insist.

 

[WalleyeMikeIII]

Hello! I have a ‘22 Tahoe Z71 Since opening my sunroof there has been a whistling noise that gets really loud & annoying. I have carried to the dealer who advised it was normal as it was due to the roof racks making the noise?? Funny it never did it for months after purchasing & driving. By chance anyone else heard of this?? I’m gonna take the roof racks off & test their theory this weekend. Thanks for any insist.

If it had racks on it before, and didn't make the noise, now it does, and the only "change" was opening the sun roof...it isn't the roof racks.

I would:
Inspect the sunroof, make sure there isn't a pinched seal somewhere or something.
Possibly open and lube the seals with silicone spray, to aid in the sealing and smoothness of closing.
Make sure the panel actually closed all the way by inspecting outside and in when closed.
Do as you are doing, but recognize that the roof racks could change the airflow and mitigate the whistle, but the panel still may not be fully closed.
Give it the water test: turn on a garden hose to a medium flow, open the sunshade inside but leave the panel closed, and irrigate around the seals while someone inside monitors for any water leakage...this will tell you if it is sealed or not...

 

[Moonlite112837]

If it had racks on it before, and didn't make the noise, now it does, and the only "change" was opening the sun roof...it isn't the roof racks.

I would:
Inspect the sunroof, make sure there isn't a pinched seal somewhere or something.
Possibly open and lube the seals with silicone spray, to aid in the sealing and smoothness of closing.
Make sure the panel actually closed all the way by inspecting outside and in when closed.
Do as you are doing, but recognize that the roof racks could change the airflow and mitigate the whistle, but the panel still may not be fully closed.
Give it the water test: turn on a garden hose to a medium flow, open the sunshade inside but leave the panel closed, and irrigate around the seals while someone inside monitors for any water leakage...this will tell you if it is sealed or not...

It was purchased new with the racks nothing was added. They investigated & told me they had to adjust the sunroof like a millimeter or two as it was not level thank goodness it never leaked. They said but that didn’t fix the noise & that it was the roof racks. Since leaving the shop it’s gotten worse. We were gonna test their theory and take racks off & if still noisy carry back to them to fix.
Thanks for your info & thank goodness it has not leaked as we have had a lot of rain. It’s only a few months old so I feel they need to fix it. .

 

[WilliamMunny]

I have had my 2022 Tahoe with sun roof and dealer installed roof racks for about a week now. I have opened and closed the sun roof a few times. I have no whistling sounds at all. Overall it’s a pretty quiet cabin.

Maybe how close or far apart the roof racks are could make a difference. But as you said just take them off and you will know right away.

 

[BlaineBug]

My 2019 whistles after I installed roof rack cross bars, just saying. I oriented them correctly as the cross bars aren't flat and have a FRONT and a REAR position.