Headlamp Housing - Condensation

jomuehlbauer · October 14, 2013

Hey guys,

Quick question. I bought a 2014 Sierra SLT last week and took it up north to the cabin over the weekend. I drove through a lot of rain throughout the whole weekend. The truck was 2 days old with 400 miles on it and I noticed the inside of both healights were foggy one night, towards the bottom over the LED running light.

Has anyone had this issue? Or has anyone herd of this being a problem?

I am taking it back to the dealer this week for some gm accessories so I am interested to see what they say.

jomuehlbauer · October 14, 2013

Also, new to the site. Here is my truck so far.

Crew cab, standard box, SLT, 20% tint on front sides, 20% over factory in rear slider.

This week - 6" oval side steps and color matched GM mud flaps.

Next week - color matched tailgate handle, mirrors (leaving the chrome cap) weathertechs, access bed cover, GM bed mat.

Eventually - color match the factory flares and GM 22s

So far I love the truck, 800 miles on it over the weekend, averaging 18.5 mpg. Only complaint is the headlight issue.

GMC-AT · October 14, 2013

I noticed this on one light as well on my LED running lights. when I pulled into the garage during rain. It went away quick... I think the lights have little vents somewhere.

Did your lights clear up quick? I wouldn't be too concerned if it did...

jomuehlbauer · October 14, 2013

I noticed this on one light as well on my LED running lights. when I pulled into the garage during rain. It went away quick... I think the lights have little vents somewhere.

Did your lights clear up quick? I wouldn't be too concerned if it did...

Yea it seemed to have dried up the next morning.

GMC-AT · October 14, 2013

All I can say is I did notice it once... but really haven't felt a need to bring it up to the dealer yet.....and I do "bring up" most everything... lol. It did clear up quickly on it's own. If you do talk to the dealer.. let us know what happens.

Edited October 14, 2013 by GMC-AT

jomuehlbauer · October 15, 2013

I went to the dealer tonight to get my running boards and mud flaps installed and brought up the headlight issues. They hadn't herd of that before but offered to replace the headlights. They'll be in Thursday.

MotoMedic · October 15, 2013

When I removed my headlights and mounted my HID ballasts to them, I didn't see any vents or openings. In fact the round cap to access the bulb has a rubber gasket to make it seal when closed.

If the truck was assembled or the housings were opened on a day with high humidity, the moisture in the air can become trapped and cause your lights to fog up. After I installed my HID's (in south Louisiana where the humidity is always high), I noticed mine had some fog build up.

Easiest way to fix is with a little nitrogen, if you have access to it. My company uses nitrogen in it's tools, so I just the hose in the housing's opening, let the gas flow for a min or so, & then closed them back up. No more moisture/fog problems.

Crooks · November 3, 2013

I noticed this on the first truck I test drove for 10min. I bought a different truck because of it. After the two and a half hour drive home it had moisture in the headlights to.

dredd · November 5, 2013

I have noticed this on mine once after a hard rain. Gone the next morning.

timmyleejohnson · November 5, 2013

I'm thinking they're vented. Being HID's and having that much heat, combined with your clear lenses (not like my ancient ones that aren't completely see through) the vents allow for longer life of the lens and bulb. At least thats what Chrysler told me to tell their customers, including my dad when he bought his 300. The downfall to this would be the water spots that might accumulate behind the lens over time. Americans seem to be the only one doing this, neither european company i've worked for has started doing it. They always clear up real quick though.

landman1122 · December 14, 2013

I have a 2014 Silverado and just had the headlights replaced today. I noticed tonight that the new ones already had moister in them. And by the way it was raining. The chevy dealership told me they were a sealed unit so they shouldn't be doing that.

ktreece · December 14, 2013

I'm thinking they're vented. Being HID's and having that much heat, combined with your clear lenses (not like my ancient ones that aren't completely see through) the vents allow for longer life of the lens and bulb. At least thats what Chrysler told me to tell their customers, including my dad when he bought his 300. The downfall to this would be the water spots that might accumulate behind the lens over time. Americans seem to be the only one doing this, neither european company i've worked for has started doing it. They always clear up real quick though.

Somebody is guilty of not reading post thoroughly

MotoMedic · December 14, 2013

When I add my grill lights in the next month, I'll pull one out and go over it carefully to verify if they're sealed or not.

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Edited December 14, 2013 by MotoMedic

kazaman · December 15, 2013

Yes, I have the standard LT headlamps. The moisture was in the bottom "high-beam" lamps. This appeared right after the dealer washed the truck the day I bought it in late November. Have been keeping an eye on it. Winter season now, and have not seen any since.

Rob191288 · December 17, 2013

So had the dealer check out my moisture in my Silverado headlights. They stated and I quote "no problem found. No bulletins found for this year model for this concern. Pervious year models indicated that a little moisture was normal and if after driving 20 minutes the moisture would evaporate."

You've got to be kidding me! Haha I find this funny because I don't know how they are comparing these to previous year models when they are a completely different body style and the headlights are different. I also owned a brand new 2011 Silverado and had no moisture in my headlights. GM let me down on this one.

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