Ventilation odor

By jhill2177
May 15, 2013 in 1999-2013 Silverado 1500 & Sierra 1500

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jhill2177

Posted May 15, 2013

I have an '11 sierra that has had an odor when the a/c is ran after the truck sits for a while. It lasts for about the first 5 minutes. The dealer sprayed something into the vents and installed some type of module. The module is supposed to dry out the system after the vehicle is turned off. No luck! It still smells. Its a strong odd odor. It is still under warranty. Can anyone help?

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