Hey gang.

I have a 2005 Sierra 4 door truck. When i drive around 75-80mph I have a really loud whistle noise that sounds like it's coming from the top of the truck. I've looked for anything that might cause an air disruption can can't find a thing?

Any ideas.

Do you think the door trip at the top of the door could cause this?

Thanks,

 

is you rig factory stock? OEM antenna? stock height? aftermarket lights? Emblems? Have you recently had the vehicle unlocked by a tow truck driver? Double check that your intake is tight.