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CTS-V odor (not the usual)

915 Views 4 Replies 4 Participants Last post by  AAIIIC
Good day to all. I have searched the forums for my situation with no results. 2014 CTS-V Wagon, owned since new, 7K on the odometer, garage kept. Since new have had bad odor inside in the following situations: driving windows up with vent system off; vent system on in RECIRC mode; windows up with sunroof in vent position. This does NOT smell like: mildew, gas, exhaust, plastic, or oil. Smells more like formaldehyde and will cause illness and itching eyes after 20 minutes driving in the above situations. Thought it may be upholstery gassing but after eight years is as prominent as new. As a mechanic, any thoughts will be helpful and thank you in advance.
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Thanks for the replies. Cabin filter changed 3 years ago and six months ago. Air filter six months ago. No debris or objects observed. Car has never been driven or out in the rain or wet roads. Never trash or eating in the car. Odor has been present since bought with 47 miles on the odometer when bought from Hendrick Cadillac, where it was kept in the showroom. Will look under seats and rear this morning.
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