Question about 2002 Chevrolet TrailBlazer

3 Answers

Trailblazer A/C clutch blows hot !

Chevy Trailblazer 2002 My AC is not working the blower is blowing but no cold air ? the system showes fullly charged ? what is common on this the AC Cluch cycles on and off ? I checked the freon and it is hard for me to get a reading because the Clutch keeps cycleing on/off but it is reading good in the green guage.

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  • west40texas May 12, 2009

    I have the same problem, but I actually took mine to the shop and they told me I needed a new fan-clutch before it would cool corectly, but that the freon was not low. I replaced the fan-clutch myself (saved $700) blows a little colder but still cycles on and off and not cold! Have also replaced the cycling switch !

  • Anonymous May 19, 2009

    The cycling can also be due to an overcharged system. When it reaches 45 lbs of pressure a safety switch will cycle it off. This is my problem. Air is getting into the system creating too much pressure. anyone know how to fix this?

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It is very interesting. But you can find more detailed information here.

Posted on Aug 09, 2011

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Common problem is fan clutch and/or cycling switch also there updated software calibrations for ecm for improved fan clutch operation

Posted on Nov 27, 2009

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  • Chevrolet Master
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If it is cycling then its low on freon .. Try to put in one can and this will take care of your problem.. The cycling is due to being low .. The clutch is operated by a pressure switch .. when the clutch kicks in it pressures up but not enough freon will kick it back off and starts over again ... Thanks Jerry

Posted on Apr 24, 2009

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http://whatisbyme.blogspot.in/2012/05/2000-toyota-avalon-no-heat-on-passenger.html

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http://technoanswers.blogspot.in/2012/02/no-heat-on-oldsmobile-silhouette.html

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http://schematicsdiagram.blogspot.in/2012/02/heater-blows-cold.html

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