Duramax Diesels Forum Truck of the Week
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Old 05-15-2018, 06:52 AM
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Default Ac funk

Wifeís terrain sat for about a week when it was getting some body work done and now it has a funk coming from the air vents itís the most prevelant after sitting and first turning on. Iíve changed the cabin filter any idea what to do?
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Old 05-15-2018, 07:09 AM
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mildew grows in the hvac box where the evaporator is as all the water doesnt always drain out the drain for it. you can leave the a/c off, windows down and turn the blower on to try to dry out whats in there for about a week or pull the hvac box and clean it out (not fun) or see if you can get your hands on a cleaner that can go in there after the cabin air filters to kill it/clean it out. i know they make foggers but i think there is an off the shelf cleaner too.
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Old 05-15-2018, 09:18 AM
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X2
Might get lucky if you crank the ac on a hot day but most likely itís like a swamp in there now
Take it apart and clean with a soft bristle brush and bleach water
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Old 05-15-2018, 02:46 PM
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Thanks guys I’ll see what i can do to clean it
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2005 Chevy 2500 LLY CCSB "Nyx"

Legal Disclaimer: My comments on this board are based on my personal experiences and life lessons. Don't try this at home. Your mileage may vary. Model shown includes options. Past performance does not reflect actual capability or intelligence. I'm off my meds. Don't listen to a thing I say, you've been warned
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Old 05-15-2018, 04:10 PM
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Originally Posted by DefiantArms View Post
Thanks guys Iíll see what i can do to clean it
Call me dumb, but I turned the 90 for my drain upside down and filled with bleach and then pulled it off and put the hose to it/let it drain 8-10 times.
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Old 05-15-2018, 04:32 PM
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I’m taking it to the dealer tomorrow for a free oil change so going to see if i can con them out of a hvac cleaning
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2005 Chevy 2500 LLY CCSB "Nyx"

Legal Disclaimer: My comments on this board are based on my personal experiences and life lessons. Don't try this at home. Your mileage may vary. Model shown includes options. Past performance does not reflect actual capability or intelligence. I'm off my meds. Don't listen to a thing I say, you've been warned
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Old 05-15-2018, 06:28 PM
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Originally Posted by WVRigrat05 View Post
Call me dumb, but I turned the 90 for my drain upside down and filled with bleach and then pulled it off and put the hose to it/let it drain 8-10 times.
did it work?
worst case scenario you arenít 100% water tight and get water in the cab of the truck
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2005 2500 CC/SB "LLY" LTZ
Typical mods for Longevity
awaiting stuff to go BooM then replace with more go fast parts!

And a few other retired Duramax's
06 360k aka Hog truck
07 320k aka Shop truck
07 340k Flatbed spare welding rig
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Old 05-15-2018, 06:34 PM
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I put towels in the floor, it did get some water in the floor board but it brought some junk out, mine didn’t stink but my floor got wet one day from the AC and I did a flush to get everything out of it, definitely not the right way but it worked ok.
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Old 05-15-2018, 09:22 PM
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I used that Meguiars anti smell bomb stuff on a car I had for sale. Car smelled like ass and cigarettes before, like a new car after. (Not me, flipping it)

Rolled windows up with air on high and recirculating inside air, set off 2 cans, and left running for an hour. Had to wash windows and wipe down dash and panels after, but that was probably just the funk from the vents.
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Old 05-16-2018, 03:45 AM
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Never heard of that before...^^
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Old 05-16-2018, 03:58 AM
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I have never tried it but I read on the internet (has to be true) that if you turn your blower on high and spray Lysol into the area that lets air come in from the outside (I believe under the windshield wipers) it will actually kill the mildew/mold. The downfall is that you would have to live with the scent for a bit. I think the mildew forms before your cabin air filter though.
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Old 05-16-2018, 05:33 AM
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get a OZONE Generator, pump in OZONE Rich Air, let the AC run on RECIRC, OZONE destroys odors, mold, bacteria in a high enough concentration.

They use them to eliminate smokers stink, after a house fire, etc
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Old 05-16-2018, 11:39 AM
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Quote:
Originally Posted by GMC_2002_Dmax View Post
get a OZONE Generator, pump in OZONE Rich Air, let the AC run on RECIRC, OZONE destroys odors, mold, bacteria in a high enough concentration.

They use them to eliminate smokers stink, after a house fire, etc
I use them on boats to get rid of mildew and mold smells.
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Old 05-17-2018, 03:29 AM
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https://www.bgprod.com/catalog/clima...g-frigi-fresh/

This is what we used at Toyota when I worked there as a kid...
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Old 05-17-2018, 03:44 AM
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Dealer wouldn’t do it for gratis so i messes with it a little but i poured about a cup of bleach in it with it in max and then rinsed it out with two bottles of water it helped a little bit. Picking up a can of ozone today.
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2005 Chevy 2500 LLY CCSB "Nyx"

Legal Disclaimer: My comments on this board are based on my personal experiences and life lessons. Don't try this at home. Your mileage may vary. Model shown includes options. Past performance does not reflect actual capability or intelligence. I'm off my meds. Don't listen to a thing I say, you've been warned
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