Getting under-hood odors in interior of 2001 Yukon

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rv8pilot

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With the A/C on I am getting engine-type odors in the interior whether it is set to outside or recirculate. I would characterize the smell as hot engine with a dash of oil. It doesn't leak any oil and the exhaust is tight as far as I can tell. It not a very strong odor but annoying. I usually don't use the A/C much so it hasn't been an issue but we had rain today and I needed the dry air. I have a CO tester I use with my generator and I'll give that a shot tomorrow just to be sure its not exhaust.

Any ideas on typical places to check are appreciated. I don't see any obvious holes anywhere.
 
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rv8pilot

rv8pilot

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Decided to try the CO tester tonight but it kept giving an error indication. It may have gone belly-up on me. Can't smell any exhaust odor and I'm not getting sleepy.
 

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