odonnell747

That's a good assumption. People have been talking about it on this same post a lot. I thought everyone here was talking about a 2500, sorry. And that's also why I said I think people are hearing different whistle noises

On the roof?

It seams like people are hearing different whistling noises? ? I was able to find out where the whistling was coming from with a roll of painters tape. Whenever I heard the noise I would stop and tape something off. I started with the windshield and found no change. I taped off the center marker light and the whistle stopped. I drove with the tape on and off a few times to verify. I took it to the dealership with what I found and they replaced the center marker light for me. Has been almost 3 weeks and no noise! !! Hopefully this will help some people.

Hello. I have a 2015 duramax with regular mirrors, roof markers and XM antena and I have the same anoying whistle. any update with anyone??? I took mine to the dealership and they told me they took one off the lot like mine and it did the same thing. They are also telling me that they cant figure out what is wrong with it. anyone have any luck. a truck that coast almost 70 grand should not sound like this......