Automotive Air Conditioning Information Forum (Archives)

SmokeandMirrorsTrick on Wed August 03, 2011 1:57 PM

Year: 2005
Make: Gmc
Model: Envoy

If this system was working properly on a 105 degree day (according to the digital read out inside the vehicle) with max ac recirc , what would be an acceptable temp coming from the vents?

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"he was hit by a Dodge, which I found funny and ironic."

Cussboy on Wed August 03, 2011 2:56 PM

Mrs. Cusser's 2005 GMC Yukon XL Denali has AC that comes in nice and cold, even in Arizona summer (yesterday was 113F in the shade - but no shade anywhere). Remember, temperature 3 feet above the street is much more than that 105F you state.

All vehicles will take significantly longer to cool if it's been parked ion the sun, that 105F makes the seats, dash, etc. about 140F !!!

bohica2xo on Wed August 03, 2011 3:20 PM

GM gave themselves lots of room in the chart for that vehicle. If it has only front air:

96 to 105f ambient should be 66f to 72f at the "left center discharge vent" Those are maximum temps from 10 to 50% humidity

With rear A/C, same test 86f to 90f at the dash vent...

As long as it cools better than those numbers, the dealer will send it down the road. With rear A/C @ 120f ambient they say 97f vents are good...

B.

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"Among the many misdeeds of the British rule in India, history will look upon the act of depriving a whole nation of arms, as the blackest."
~ Mahatma Gandhi, Gandhi, An Autobiography, M. K. Gandhi, page 446.