Windshield Defroster Coverage & Efficiency - Chevy Traverse Forum: Chevrolet Traverse Forum
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post #1 of 11 (permalink) Old 01-01-2010, 01:31 AM Thread Starter
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Windshield Defroster Coverage & Efficiency

It seems that the windshield defroster/defogger works really well in the middle of the windshield, but takes a good while to clear the right and left sides of the glass. I surmise this is because of the single large center vent, but I question if and how this could be improved.

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post #2 of 11 (permalink) Old 01-01-2010, 09:46 AM
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Re: Windshield Defroster Coverage & Efficiency

I noticed this too. I haven't driven in really bad fogging weather yet but I can see how it could be a problem. The vent just seems too narrow.

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post #3 of 11 (permalink) Old 01-01-2010, 09:34 PM
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Re: Windshield Defroster Coverage & Efficiency

It doesnt even work on our Traverse. We might have it on wrong, but still. The defogger doesnt defog our Traverse

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post #4 of 11 (permalink) Old 01-01-2010, 10:36 PM
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Re: Windshield Defroster Coverage & Efficiency

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Originally Posted by maseacre
It doesnt even work on our Traverse. We might have it on wrong, but still. The defogger doesnt defog our Traverse
Whatever systemyou have in your Traverse, move the control to FULL defrost to clean the inside of the w/shield. Bumping the fan speed to a high level would also help, I believe.


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post #5 of 11 (permalink) Old 01-01-2010, 11:26 PM
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Re: Windshield Defroster Coverage & Efficiency

I dont remember if the Traverse- automatically turns on the AC compressor... or just blows air at the glass...
But whenever I have to use the defogger- I set it to HOT and on high....

Once this has cleared up the windows enough to drive off--- and if its cold enough- and theres enough of us in the car to cause fogging up of all the windows (including rears)- I will turn on the AC and set the heat appropriately---- but the AC - conditions the air.... basically sucks out all the moisture in the cabin- from our breathing- from the evaporating moisture from our wet clothes, shoes, floor mats. etc.

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post #6 of 11 (permalink) Old 01-02-2010, 09:02 AM
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Re: Windshield Defroster Coverage & Efficiency

I notice up here in chilly Canada, that the defrost takes longer in the winter months. That is because the A/C compressor doesn't kick on because the temperature is to low. Its a built in safety to protect the compressor. In that case, you only have unconditioned air blowing on the window. It still will clear up, but takes longer. Rainy days in the summer, the A/C works, so the defrost works in about half the time. I agree with turning the blower to HIGH and HOT.

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post #7 of 11 (permalink) Old 01-05-2010, 06:05 PM
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Re: Windshield Defroster Coverage & Efficiency

Quote:
Originally Posted by andylibby
It seems that the windshield defroster/defogger works really well in the middle of the windshield, but takes a good while to clear the right and left sides of the glass. I surmise this is because of the single large center vent, but I question if and how this could be improved.
Last night the Traverse was outside, temp got to 14*. This morning it was a BUGGER to get the w/shield defogged / defrosted within a reasonable period of time. It is my guess, down the road, some modification will take place within GM to speed up the efficiency of that defroster.

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post #8 of 11 (permalink) Old 01-05-2010, 06:09 PM
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Re: Windshield Defroster Coverage & Efficiency

Ive never lived in cold places where it gets down to your temps--
but what about taking a HOT bucket of water- and pouring it on the windshield?
would the water freeze pretty soon?


oh wait while typing this...-- I just thought about thermal shock to the windshield--- I can see it cracking....
forget it..... At least my brain was doing double thinking....

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post #9 of 11 (permalink) Old 01-05-2010, 07:55 PM
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Re: Windshield Defroster Coverage & Efficiency

Quote:
Originally Posted by rbarrios
Ive never lived in cold places where it gets down to your temps--
but what about taking a HOT bucket of water- and pouring it on the windshield?
would the water freeze pretty soon?


oh wait while typing this...-- I just thought about thermal shock to the windshield--- I can see it cracking....
forget it..... At least my brain was doing double thinking....
Seems like too much work every morning.

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post #10 of 11 (permalink) Old 01-05-2010, 09:39 PM
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Re: Windshield Defroster Coverage & Efficiency

With all the snow and very cold weather (-16 C ) the last week, my remote starter starter is awesome, the car defrosts the windshields pretty quickly and warms up the car fairly quickly too..... no problems with fogging as well....... Although the car is not real 4 wheel drive, I feel a good grip on the road despite all the snow and ice.

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