Air Conditioning Weirdness.... - Chevy Traverse Forum: Chevrolet Traverse Forum
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post #1 of 21 (permalink) Old 02-22-2010, 04:34 PM Thread Starter
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Air Conditioning Weirdness....

Yeah, I know, it's the middle of Winter... But I'm starting to wonder about the A/C in my Traverse. I use the "auto" setting almost 100% of the time. Even in the Winter, I've seen times where the A/C would turn on even though it's cold and the system should be blowing heat. It does blow heat and not cold which is good. But that's just one oddity, and I think it's been talked about else where in the forum (search couldn't find it...). But that's not the real problem...

Now, what really bugs me is something that happened yesterday. It was a rather cold and rainy day. I got in my Traverse and there was a lot of fog on the glass, so I turned on the defrost setting and tried to turn on the A/C to give it more moisture removable abilities. I've always done defrosting this way, it really helps pull the wetness out of the air quickly and get the frost/fog off the glass very quickly. However, yesterday the A/C would not turn on. When I would hit the button the A/C light would only flash a few times, then go off. I was in a hurry and was already moving, and the fog on the glass took forever to go away which really bugged me. I should have been able to add the A/C and blow dry air on the windows.

Does anyone else see this problem?
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post #2 of 21 (permalink) Old 02-22-2010, 04:40 PM
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Re: Air Conditioning Weirdness....

Even though the light does not come on the compressor does when you manually go to the defrost setting. The button wont stay lit because the temp inside the vehicle is to cold. Now when it comes on during auto probably means that the temp in the vehicle is warmer than the setting, thus turning on the a/c. When you switch over to the defrost setting are you increasing the blower speed? I'm sure you know that you have to increase it manually.

If you adjust the vent setting to say feet and windshield, the compressor does not come on, it's just redirected air flow in the manual setting. If you are doing this, that is why you wont get the fog to go away.

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post #3 of 21 (permalink) Old 02-22-2010, 04:45 PM Thread Starter
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Re: Air Conditioning Weirdness....

Yep, I know about GM defrost modes and the A/C. I couldn't tell that the A/C was on at all yesterday though. I've had the A/C come on auto in all types of coldness though, inside and outside the Traverse. It would blow warm air and the A/C would be on at the same time. I guess I might be too used to manual air controls. If the auto stuff works this way, then I'd say that's for the birds!

I'll bug my dealer and post anything he says about it.
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post #4 of 21 (permalink) Old 02-22-2010, 07:14 PM
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Re: Air Conditioning Weirdness....

Straight out of the 2010 Traverse Owner's Manual:

0(Defrost): This clears the
windshield of fog or frost, more
quickly. Air is directed to the
windshield and side window vents,
with some to the floor vents. In this
mode, outside air is pulled inside
the vehicle. Recirculation cannot be
selected while in the defrost mode.
The air conditioning system runs
automatically in this setting, unless
the outside temperature is less than
4C (40F). Do not drive the vehicle
until all the windows are clear.
# (Air Conditioning): Press to
turn the air conditioning system on
or off. An indicator light comes on
when A/C is on. The air conditioning
system does not operate when the
outside temperature is below 4C
(40F). The indicator light flashes
three times and turns off when
outside conditions affect air
conditioning operation. This is
normal.[/color]

2010 Traverse 1LT<br />Built 3/10 in Lansing, MI<br /><br />Ontario, Canada
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post #5 of 21 (permalink) Old 02-23-2010, 10:49 AM Thread Starter
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Re: Air Conditioning Weirdness....

Thanks Quantum. I'm going to rate that "feature" as a negative If I want to turn on the A/C at 20 degrees, I want to turn it on. Grrrr!
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post #6 of 21 (permalink) Old 02-23-2010, 01:38 PM
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Re: Air Conditioning Weirdness....

I think its done as to not damage the AC system.

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post #7 of 21 (permalink) Old 02-23-2010, 02:09 PM
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Re: Air Conditioning Weirdness....


2010 Traverse 1LT<br />Built 3/10 in Lansing, MI<br /><br />Ontario, Canada
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post #8 of 21 (permalink) Old 02-24-2010, 01:19 PM Thread Starter
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Re: Air Conditioning Weirdness....

I wonder how it would damage it? Freon, I believe its R-134, doesn't freeze until -204 Degrees F. I've had times where during driving I would run into air changes that quickly fog the windows. Turning on the A/C is the only way to quickly un-fog them. heat was too slow. All this while going highway speeds. Maybe they need to figure out another way to protect the A/C...
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post #9 of 21 (permalink) Old 02-24-2010, 06:11 PM
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Re: Air Conditioning Weirdness....

It is to protect the A/C compressor. There is oil in the compressor that keeps things lubricated. The oil gets too thick to be effective in the colder temps. That's why you can't use the A/C below certain temps.

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post #10 of 21 (permalink) Old 02-24-2010, 10:17 PM
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Re: Air Conditioning Weirdness....

Quote:
Originally Posted by Quantum
It is to protect the A/C compressor. There is oil in the compressor that keeps things lubricated. The oil gets too thick to be effective in the colder temps. That's why you can't use the A/C below certain temps.
One other comment ... the oil is mixed with the freon, thus the concern for the inner workings of the a/c compressor.

Bob

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