Question about 2005 Chevrolet Uplander

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2005 uplander... temperature dial on cool, getting warm air

2005 uplander... when I have temperature dial as far to left(cool) as it will go, I am getting warm air from vents.. Any ideas ?? Is there a sensor for this ??? It just started doing this a couple of days ago .. warm weather is here so really don't want heat coming from vents... No warning lights on and engine temp gage is fine....

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  • for_captain_ Jun 07, 2010

    Thanks, but no noise in van, will check vacuum hose, air still works, it just can't really get cold enough since it is cooling down warm air.... could there be a sensor of some kind just to control temperature settings ???



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Sounds like the air mix rod is out of adjustment or if vacuum controled, its leaking can you hear a noise in the vehicle or can you find a vacuum hose off in the engine bay hope it gives a little help

Posted on Jun 07, 2010

  • ditchgm Jan 25, 2011

    In my case, there are hissing like noises - but no cooling - rotating the heat and cool control seems to make it sound like symnphony. Wonder if anyone has this problem?

  • for_captain_ Jan 25, 2011

    Thanks for advice , van went to dealership after they replaced the entire control unit on dash ($800), they said diagnostic said that was the problem ... but of course that did not fix the problem , so they took out dash and found a short in a wire somewhere in dash , so far so good .. all is working but have to wait until summer to see if my air conditioning still works .. crossing my fingers ..



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