wind noise/flapping after washing car/rain

[GMCustomerService]

23 hours ago, Nicholas Craine said:

Same we have a 2021 z71 tahoe and after rain or car wash. It comes out of both sides making the noise I have read there is a extention for the drain hose for the sunroof and you need to add the extended hose because otherwise what is currently in there is allowing to much pressure to build up and not allowing the water to properly drain which is the noise we are all hearing. Not sure how this is done yet I am researching it now and once I find out and have the extended hose added I will update if it fixes the issue.

 

 

This is certainly not what we like to hear, Nicholas Craine.  Please know, customer satisfaction is extremely important to us. Our team would be more than happy to take a closer look into the concerns with your 2021 Z71 Tahoe. To do so, please send an email to [email protected] with ATTN: Nicholas Craine/GM Trucks in the subject line.

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[Pacfanweb]

There is a permanent fix for this noise now, a TSB to install extensions on the front drain tubes so the pressure won't stop the water from draining.   New drain tubes come with the extension tubes already installed as well. 

[newdude]

On 4/10/2023 at 10:15 AM, Pacfanweb said:

There is a permanent fix for this noise now, a TSB to install extensions on the front drain tubes so the pressure won't stop the water from draining.   New drain tubes come with the extension tubes already installed as well. 

 

 

For those wishing to read it:  20-NA-219 1..8 (nhtsa.gov)

[John33]

I had a Denali a little while back and was having issues left and right. Contacted California Lemon law Center to see if something could be done about it; they were able to get all my payments back and even some on top. Would highly recommend any of you who are experiencing issues with your cars to reach out and see if you have a case.

 

Here’s their website: https://californialemonlawcenter.com/