[TMasticTB91]

Guys it isn't affected by humidity but by dew point. Dew points between like April-October in Florida are usually between 70-75. If you have your air on and set colder than the dew point, any air hitting the windshield will cool the windshield below the dew point and will cause the windshield to fog up.

Right now it's 79 in Tampa with a dew point of 64. If I was to blast the A/C on max I would imagine my window would fog, but what sucks is during the summer when it's 80 at 8am, 75 dew point, and your front windshield is fogging up because you have it set to 75 or lower.

I've lost many weeks with my car so Chevy/GM can research this. The engineers concluded that the amount of air that 'bleeds' from the defrost vent, even when you don't want air coming out of it, is working as it was designed.

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