Interior Condensation / Fogging Up

nickjaynes · Thursday at 7:58 PM

I picked up a '24 Silverado ZR2 Bison the other week. I noticed that if I don't have the A/C running full time, my truck's windows will fog up. I live in the PNW where rain, humidity, and condensation are persistent this time of year. But I have several other new vehicles from other OEMs, and this isn't a problem with any of those rigs. I can drive my '23 Super Duty in the pouring rain without needing to turn on the A/C. But my ZR2 fogs up immediately without the A/C on.

I noticed that there is some water that runs down the door panel. It's not raining today, so I wasn't able to capture the condensation trail. I'll circle back tomorrow when it's raining again. In the meantime, I marked in red in the picture below where I see water running.

I took it back into my dealer. They put it under their sprayer and said they couldn't find any leaks. They also said that condensation I am seeing is normal. And they said all Silverados do this. I am not sure I believe them.

Are any of you guys having issues with condensation, moisture build up, or fogging windows? If it is a design flaw, I can look past it. But if my truck is uniquely flawed, I want to know so I can lean on them to remedy it.

Thanks!

The_Q · Thursday at 8:17 PM

Make sure you don’t have the AC recirculating on. Allowing the interior to breathe may help.

nickjaynes · Thursday at 8:19 PM

The_Q said:
Make sure you don’t have the AC recirculating on. Allowing the interior to breathe may help.

Yeah, recirc is off. It'd be nice to be able to dry out the interior, but the truck doesn't fit in my garage and it'll be pretty damp here for the next 6 months

The_Q · Thursday at 8:21 PM

nickjaynes said:
Yeah, recirc is off. It'd be nice to be able to dry out the interior, but the truck doesn't fit in my garage and it'll be pretty damp here for the next 6 months

Yeah, I remember when I was stationed at NAS Whidbey Island the joke was “we don’t tan, we rust” because of all the rain.

LSnTX · Thursday at 8:57 PM

I have the “water marks”on my truck too, I think it’s a releasing agent stain from the factory, seen it on others too.
It’s bullshit, but I’ve not been able to make it go away. Not related to your condensation.
It’s winter where you are and not being able to park inside means you’re constantly exposed to moisture, plus just breathing inside is a lot of humidity, plus you’re singing off key!
Try different things when you shut down, like keeping the defrost off. See if anything changes

Bobcat Sig · 2024-11-22T10:28:00-0600

I'm on my second late-model Chevy truck. Third, if you count my '16 GMC 2500.

They all do this. My '23 Colorado seemed extra foggy inside and I've noticed similar on my new-to-me '22 ZR2. It's most pronounced when the climate control is set to Auto. A minute or three running on defog/lower vents and it clears right up.

@nickjaynes I grew up in LO. Small world.

GATORB8 · 2024-11-22T11:29:45-0600

It's fogging up on the inside? Does it seem humid inside?

May be worth a shot to put some damprid in the interior and try to draw out any moisture in the interior that's in carpets/porous materials.

nickjaynes · 2024-11-22T13:32:19-0600

Bobcat Sig said:
I'm on my second late-model Chevy truck. Third, if you count my '16 GMC 2500.

They all do this. My '23 Colorado seemed extra foggy inside and I've noticed similar on my new-to-me '22 ZR2. It's most pronounced when the climate control is set to Auto. A minute or three running on defog/lower vents and it clears right up.

@nickjaynes I grew up in LO. Small world.

My '19 Colorado doesn't do this — just the '24 Silverado. That's why I thought it was odd.

Funny you grew up in LO, where are ya now?

nickjaynes · 2024-11-22T13:33:06-0600

GATORB8 said:
It's fogging up on the inside? Does it seem humid inside?

May be worth a shot to put some damprid in the interior and try to draw out any moisture in the interior that's in carpets/porous materials.

Yeah, I was thinking of throwing a Damprid in there for a weekend to pull moisture out of there.

Busa Dave · 2024-11-22T15:30:56-0600

The compressor will remove the humidity. Never had this kind of problem when the ac compressor is running in over 50 vehicles including my 2024 ZR2 HD and my 2024 ZR2 Bison Colorado.

nickjaynes · 2024-11-22T15:33:07-0600

Busa Dave said:
The compressor will remove the humidity. Never had this kind of problem when the ac compressor is running in over 50 vehicles including my 2024 ZR2 HD and my 2024 ZR2 Bison Colorado.

Oh, no, that’s what I’m saying. I have to have the A/C on nonstop. Otherwise it fogs up, which isn’t normal

AXE · 2024-11-22T18:29:17-0600

Busa Dave said:
The compressor will remove the humidity. Never had this kind of problem when the ac compressor is running in over 50 vehicles including my 2024 ZR2 HD and my 2024 ZR2 Bison Colorado.

Texas ain't Washington tho!

MrScottly · 2024-11-22T18:37:55-0600

In Florida, we grow gills because the air is water here. I regularly clean my windows with a good quality glass cleaner...so they don't fog up when the climate control is turned off.

HighTechPauper · 2024-11-22T23:27:54-0600

Moist air, no A/C, yeah the windows are going to fog. The lines on the door line up with the rubber gaskets that are on the body. I have had 2 of this gen truck and both will do this during the moist times spring through fall. IMHO/YMMV

geddyflea · 2024-11-23T06:17:38-0600

Have you checked the carpets, headliner and around the rear window for leaks. Maybe check under the floor mats and under the rear seats for dampness. I'm not sure about now, but in the past there was trouble with leaking rear windows. You'll want to check the cabin air filter and housing for water also. Ram is having the same problem.

AXE · 2024-11-23T10:14:10-0600

geddyflea said:
Have you checked the carpets, headliner and around the rear window for leaks. Maybe check under the floor mats and under the rear seats for dampness. I'm not sure about now, but in the past there was trouble with leaking rear windows. You'll want to check the cabin air filter and housing for water also. Ram is having the same problem.

Also if you have a sunroof, the drains go down the a pillars, if they get separated or plugged it will leak. I had a previous truck that a drain line had separated from the exit near the firewall. It drained above the emergency brake inside the cab.

MrScottly · 2024-11-23T11:22:13-0600

AXE said:
Also if you have a sunroof, the drains go down the a pillars, if they get separated or plugged it will leak. I had a previous truck that a drain line had separated from the exit near the firewall. It drained above the emergency brake inside the cab.

Reason number 3,245 not to get a sunroof in your truck. It's Florida...I want OUT of the sun.

22-ZR2 · 2024-11-23T13:02:18-0600

Hey don’t knock my sunroof, I like basking in the 110 summer heat coming through the sunroof during the summer in Florida. There’s nothing like it.

AXE · 2024-11-23T13:31:40-0600

MrScottly said:
Reason number 3,245 not to get a sunroof in your truck. It's Florida...I want OUT of the sun.

I've never liked them and never used them. I had one in my last Duramax simply because every one I looked at had them. If you order your truck, you don't heve to deal with it.

DNZR2 · 2024-11-23T15:15:13-0600

22-ZR2 said:
Hey don’t knock my sunroof, I like basking in the 110 summer heat coming through the sunroof during the summer in Florida. There’s nothing like it.

Now we know why he is so adamant about white.

Interior Condensation / Fogging Up

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