[raptor5244]

Originally Posted by TMasticTB91

Come on man. Why would this happen on my 2016 Camaro when I have personally driven a 2016 Silverado (current loaner), 2017 Equinox (previous loaner), 2013 Equinox (previously owned), 2012 Buick LaCrosse (previously leased), and 2015 Malibu (parents' car), all GM vehicles, all in the same temperature/humidity conditions, and NONE of them fog the windshield under typical A/C usage (air set anywhere between 60-75, torso and/or leg vents ONLY)?

The vents aren't closing enough to prevent enough cold air from hitting the windshield and causing visibility-reducing foggy patches on the windshield. No, the vents aren't air-tight, but they should at least CLOSE and have very minimal air escaping.

Ever have a ray of sunlight hit a fog patch on your windshield? It reduces visibility to ZERO. This is a safety concern.

Agreed. Owned 25 cars in SFL, including a gen5 I just replaced. None have ever done this. There is a very low humidity threshold required for this issue to pop up. If it is early morning and humid, get ready for the condesation right away. If it is hot and sunny, mid day usually it is dry enough to keep the crop circles minimized or nonexistent. If it has just rained, forget it you are in for some giant condesation crop circles. If it is a muggy evening be prepared to swipe your wipers every minute or so.

[motorhead]

The average dewpoint in the deep south is around 73degf. That means that any surface below that temp will condense moisture out of the air onto it. Running the evaporator temperature a little higher could keep the outside of the windshield from getting that cold even though air is bypassing the vent. Sorry, but this is an interesting problem for me as air conditioning and refrigeration are my business. We have it happen in older homes with lousy windows and the supply vents are installed under them. If it can't be fixed by controlling the evaporator temperature, I can't see this being and easy fix without gutting the dash. Keep us posted OP. My ZL1 purchase may hinge on this getting fixed along with some of the other issues going on with
this car.


Edit: can you guys measure the supply air temp coming out of that vent and report back? I would like to compare it to my ZL1 and a couple of my other vehicles.

[JFM-jr]

ive been driving 28 years and many many many cars. I have never experienced this issue with any other car

[sonnydurden]

Originally Posted by raptor5244

Agreed. Owned 25 cars in SFL, including a gen5 I just replaced. None have ever done this. There is a very low humidity threshold required for this issue to pop up. If it is early morning and humid, get ready for the condesation right away. If it is hot and sunny, mid day usually it is dry enough to keep the crop circles minimized or nonexistent. If it has just rained, forget it you are in for some giant condesation crop circles. If it is a muggy evening be prepared to swipe your wipers every minute or so.

Agreed!! I've owned many cars in GA and never experienced anything like this! It's so phucking annoying!!

[tcbracing]

Just to put some facts with all of the statements out there, here is a photo of my fogging. This was a typical morning in Missouri this summer - 78 degrees, 100% Humidity, dewpoint around 74 - Auto Climate set to 72 degrees. It never gets any worse than this no matter the time and/or temperature and, based on my seating position (I'm 6'3"), it does not block anything except some of the hood. Had the exact same issue on my 2013 Cruze and 2014 Cadillac CTS and have the exact same issue on my fiance's 2011 F150...

[TMasticTB91]

Here is mine the day I dropped off my car. Approx. 8am, low 80s, near 100% humidity, dew point in the mid 70s. Standard Florida morning 8 months of the year.

This is where the "core" of the foggy area settled. It was larger when I first started driving before adjusting temp/vents/etc., eventually got it 'smaller' and contained. Still partially blocked my view.

Notice how the sun on the left side of the foggy area causes it to go from semitransparent to solid; you can't see the Equinox at all. Out of direct sunlight, the right side, you can at least see the taillights of the Cobalt sitting there.

[classicrockr]

Originally Posted by TMasticTB91

Here is mine the day I dropped off my car. Approx. 8am, low 80s, near 100% humidity, dew point in the mid 70s. Standard Florida morning 8 months of the year.

This is where the "core" of the foggy area settled. It was larger when I first started driving before adjusting temp/vents/etc., eventually got it 'smaller' and contained. Still partially blocked my view.

Notice how the sun on the left side of the foggy area causes it to go from semitransparent to solid; you can't see the Equinox at all. Out of direct sunlight, the right side, you can at least see the taillights of the Cobalt sitting there.

And that's still unacceptable, for any manufacturer.

[vet757]

Anybody considering the Lemon Law route? Seems like the fogging could be dangerous in certain circumstances, which in my opinion is unacceptable. Ill definitely be testing my HVAC all weekend just in case.

[motorhead]

Originally Posted by tcbracing

Just to put some facts with all of the statements out there, here is a photo of my fogging. This was a typical morning in Missouri this summer - 78 degrees, 100% Humidity, dewpoint around 74. It never gets any worse than this no matter the time and/or temperature and, based on my seating position (I'm 6'3"), it does not block anything except some of the hood. Had the exact same issue on my 2013 Cruze and 2014 Cadillac CTS and have the exact same issue on my fiance's 2011 F150...

We've had heat advisories all week with temps about 94 and dewpoints above 75degf. The dewpoint temp is the key by the way. I ask my service guys if they have the issue. No one. I have no issue and my wife's car, no issues. I run my truck like a meat locker too. No fog on windshield. Maybe the window glass in the gen6 isn't as thick. I would think that there would be minimum standard there though. Ill be in my ZL1 later and Ill check it, but it's never done it.

Look like real issue with this car. Not everyone is 6'3" that could be right in the sight lines of a shorter human.

[JaxChris]

Originally Posted by vet757

Anybody considering the Lemon Law route? Seems like the fogging could be dangerous in certain circumstances, which in my opinion is unacceptable. Ill definitely be testing my HVAC all weekend just in case.

Forward visibility during day or night is an acceptable case for lemon laws in most states. Same as headlights taking on water, an impaired windshield without reasonable remedy does qualify.

Be mindful of your daily humidity before you go out on a long drive -- especially at night. If the humidity is above 55-60%, I hope the temps are low enough outside in VA that you can turn off the AC or possibly even run the heat.

[TMasticTB91]

Originally Posted by vet757

Anybody considering the Lemon Law route? Seems like the fogging could be dangerous in certain circumstances, which in my opinion is unacceptable. Ill definitely be testing my HVAC all weekend just in case.

If/when I ever get my Camaro back, if it's properly fixed (none or hardly fogging up like tcbracing's pic), and my HVAC system is working properly, then I'll be perfectly fine.

If I get it back and it's still like it is in my last picture... it's a definite possibility.

[motorhead]

Originally Posted by JaxChris

Forward visibility during day or night is an acceptable case for lemon laws in most states. Same as headlights taking on water, an impaired windshield without reasonable remedy does qualify.

Be mindful of your daily humidity before you go out on a long drive -- especially at night. If the humidity is above 55-60%, I hope the temps are low enough outside in VA that you can turn off the AC or possibly even run the heat.

The dew point is the key. Not the humidity directly.


dew point
noun
the atmospheric temperature (varying according to pressure and humidity) below which water droplets begin to condense and dew can form.

[TedJS]

Originally Posted by tcbracing

Just to put some facts with all of the statements out there, here is a photo of my fogging. This was a typical morning in Missouri this summer - 78 degrees, 100% Humidity, dewpoint around 74 - Auto Climate set to 72 degrees. It never gets any worse than this no matter the time and/or temperature and, based on my seating position (I'm 6'3"), it does not block anything except some of the hood. Had the exact same issue on my 2013 Cruze and 2014 Cadillac CTS and have the exact same issue on my fiance's 2011 F150...

I think his point is that if the dealer is replacing parts - the technician (dealer) has diagnosed a problem with the vehicle. Otherwise, why would they be replacing the parts?

Either the mode valve actuator is not fully moving the door closed or the door is binding which is not allowing the door to fully close. Scan tool would confirm this. The technician also presumably monitored upper duct air temp with the scan tool to verify the cold(er) air is reaching this ductwork to verify the diagnosis of the complaint. It is assumed the technician monitored the HVAC control module and possibly saw the sensor signal is not changing or the mode valve actuator has not moved to the commanded position.

This is either a hardware fault or software issue with the controller in the automatic operation mode.

[Algeron]

Just got mine back from 2 months in the shop, for other reasons, and this was the first thing I noticed.