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moldy smell when i turn on tahoe AC #7894696 07/08/20 09:20 PM
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So as soon as we get in my wifes Tahoe..(2015) it smells like a nasty moldy gym sock.. it lasts a few minutes and then pretty much goes away... Have yall had this or have any ideas on how to fix it? The cabin filter is new..

Re: moldy smell when i turn on tahoe AC [Re: txhunter1010] #7894699 07/08/20 09:23 PM
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Probably an old moldy gym sock underneath the seat - sorry, couldn't help it!


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Re: moldy smell when i turn on tahoe AC [Re: Halfadozen] #7894705 07/08/20 09:27 PM
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Originally Posted by Halfadozen
Probably an old moldy gym sock underneath the seat - sorry, couldn't help it!


That is my immediate thought, something is marinating in there.


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Re: moldy smell when i turn on tahoe AC [Re: txhunter1010] #7894709 07/08/20 09:30 PM
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AC drain backed up.


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Re: moldy smell when i turn on tahoe AC [Re: txhunter1010] #7894714 07/08/20 09:32 PM
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Bob, if the drain was backed up would it still be dripping out under the car? It is dripping a lot

Re: moldy smell when i turn on tahoe AC [Re: txhunter1010] #7894722 07/08/20 09:40 PM
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Somehow some of the water is not completely draining. Might be as simple as a little dust accumulated in there and every time you crank it up it gets wet and smells like an old moldy towel for awhile.


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Re: moldy smell when i turn on tahoe AC [Re: txhunter1010] #7894723 07/08/20 09:41 PM
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Does it smell like YOUR gym sock?

Re: moldy smell when i turn on tahoe AC [Re: txhunter1010] #7894725 07/08/20 09:43 PM
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Ok, so bad analogy on the gym sock.. haha.. smells really moldy and there are no garments in the car...LOL... any idea on how to check drain?

Re: moldy smell when i turn on tahoe AC [Re: txhunter1010] #7894727 07/08/20 09:44 PM
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Have you tried changing the cabin air filter?


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Re: moldy smell when i turn on tahoe AC [Re: txhunter1010] #7894733 07/08/20 09:47 PM
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yes cabin filter is new

Re: moldy smell when i turn on tahoe AC [Re: txhunter1010] #7894734 07/08/20 09:47 PM
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Burn a couple of blunts in there and it's guaranteed to go away !

Re: moldy smell when i turn on tahoe AC [Re: txhunter1010] #7894735 07/08/20 09:48 PM
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I even ran some AC cleaner through the outside intake vents and it worked for about a week but the smell is back..

Re: moldy smell when i turn on tahoe AC [Re: txhunter1010] #7894738 07/08/20 09:49 PM
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As humid as it has been you can still get water dripping due to condensation on the AC components (expansion valve, receiver dryer, bare metal lines )where they enter the firewall.


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Re: moldy smell when i turn on tahoe AC [Re: txhunter1010] #7894741 07/08/20 09:53 PM
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Or you could hang one of them air freshners from the rearview mirror.

This is probably a function of the humidity and warmness. Vents get cold, condensation builds and then you get out and the car sits for 24 hours. I bet if you took a several our trip with the AC on that smell might go away. Might also put a pan of charcoal under a seat (or both). If you can find some spray Lysol bomb the intake for a minute or so.

R U running it on recirc or fresh air?

FTR, my GMC does the same sometimes.

Re: moldy smell when i turn on tahoe AC [Re: txhunter1010] #7894745 07/08/20 09:55 PM
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usually just run it on normal fan.. its the wifes car so she is in it everyday and im trying to figure it out for her..

Re: moldy smell when i turn on tahoe AC [Re: txhunter1010] #7894749 07/08/20 09:58 PM
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Before shutting car off turn off recirculate air button.


Last edited by Superduty; 07/08/20 09:58 PM.

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Re: moldy smell when i turn on tahoe AC [Re: txhunter1010] #7894776 07/08/20 10:15 PM
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When was the last time the cabin air filters were changed?


Funny thing about getting older:
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see through people's BS gets much better.
Re: moldy smell when i turn on tahoe AC [Re: txhunter1010] #7894801 07/08/20 10:39 PM
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Black mold.

Re: moldy smell when i turn on tahoe AC [Re: txhunter1010] #7894803 07/08/20 10:42 PM
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Heater core leak.


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Re: moldy smell when i turn on tahoe AC [Re: txhunter1010] #7894807 07/08/20 10:51 PM
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Remove the fan and dry it out. Maybe hit it with a bleachy solution.
So easy even a ...


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You`re walking on the fighting side of me. (Merle)
Re: moldy smell when i turn on tahoe AC [Re: dogcatcher] #7894809 07/08/20 10:54 PM
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Originally Posted by dogcatcher
Somehow some of the water is not completely draining. Might be as simple as a little dust accumulated in there and every time you crank it up it gets wet and smells like an old moldy towel for awhile.


that right there


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Re: moldy smell when i turn on tahoe AC [Re: txhunter1010] #7894847 07/08/20 11:20 PM
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Where do you live? Feel free to PM me.

https://www.bgprod.com/catalog/climate-control/bg-frigi-fresh/#bg-product-5

That’s good stuff also


Originally Posted by Chunky Monkey
Never been to a camping world. I prefer Dick's to be honest.
Re: moldy smell when i turn on tahoe AC [Re: TEXASLEFTY] #7894860 07/08/20 11:31 PM
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Originally Posted by TEXASLEFTY
Where do you live? Feel free to PM me.

https://www.bgprod.com/catalog/climate-control/bg-frigi-fresh/#bg-product-5

That’s good stuff also

Best bet is Lefty up

Re: moldy smell when i turn on tahoe AC [Re: TEXASLEFTY] #7894890 07/09/20 12:01 AM
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Originally Posted by TEXASLEFTY
Where do you live? Feel free to PM me.

https://www.bgprod.com/catalog/climate-control/bg-frigi-fresh/#bg-product-5

That’s good stuff also

Does one just shoot that into the vents ? Looks like the way to go !


If you`re running down my country, man,
You`re walking on the fighting side of me. (Merle)
Re: moldy smell when i turn on tahoe AC [Re: pdr55] #7894940 07/09/20 12:51 AM
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Originally Posted by pdr55
Originally Posted by TEXASLEFTY
Where do you live? Feel free to PM me.

https://www.bgprod.com/catalog/climate-control/bg-frigi-fresh/#bg-product-5

That’s good stuff also

Does one just shoot that into the vents ? Looks like the way to go !


If it were my Tahoe, I’d do what you suggested sir. I’d remove the blower motor and take a look around.


Originally Posted by Chunky Monkey
Never been to a camping world. I prefer Dick's to be honest.
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