Foged up interior windows

[selmahotrod]

I just bought a 2017 GMC Denali 1500 and the inside of windows stay fogged up unless I turn on the defrost. Any ideas?

[17Midnight]

Leave the wife/girlfriend at home.

[Pacfanweb]

Check under the floor mats for dampness. You may have a water leak.

[Dnt]

Are you setting the hvac controls to auto or are you setting everything manually?

[diyer2]

As mentioned, check for damp carpet. Dealer may have cleaned carpet for some reason and never dried. Park outside on a sunny warm day with windows down, preferably in the sun.

[selmahotrod]

ok

[TheGeek]

I thought my windows were fogging up, but it was a film on the glass. It took 4 cleanings to get it clean.

[BigBadSierra]

I only clean my dashes in vehicles with warm water on a damp cloth. Anything you use on the dash ends up on the glass after the sun beats down on it.

 

I get way less build up.

[Sierra 5.3]

I only clean my dashes in vehicles with warm water on a damp cloth. Anything you use on the dash ends up on the glass after the sun beats down on it.

 

I get way less build up.

Good information. Never knew this.

[Willyone]

Glass in mine seems to always have a very light fog in cold weather. No known leaks or water/moisture source. Anyone know if there's a window cleaner that has some kind of anti-fog formula?