Question about 2004 Chevrolet Malibu

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I have a 2003 Avalanche. Heater is only blowing cold, BUT, if I play (slam) the heat controls up and down I can sometimes get warm/hot air for a few minutes, then the defrost fan gets louder and turn

It's not only on defrost, but vents too. But at -40 I'm trying to keep my windows from freezing up! It's a 2003 1500 Avalanche, 5.3L, 4x4.

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  • mschuleris
    mschuleris Jan 24, 2013

    I've been told an Actuator and/or a B.C.M.

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You need a new B.C.M. stands for body control modgual you can put a used one in they are under the dash it is a computer that controls the command when you push a button for interior of car

Posted on Jan 24, 2013

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How do I fix the heat


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The heater in my 1999 Land Rover Discovery Series 1 won't blow cold.


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Heat blows cold on drivers side and hot on passenger side? http://schematicsdiagram.blogspot.com/2011/12/heat-blows-cold-on-drivers-side-and-hot.html---------- Hot air on the driver's side vents only? http://repairhelpcenter.blogspot.com/2012/01/hot-air-on-drivers-side-vents-only.html

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2005 Chrysler PT Cruiser: A/C Blows Warm? http://whoisbyme.blogspot.in/2012/06/2005-chrysler-pt-cruiser-ac-blows-warm.html

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1992 Toyota Camry: A/C Control light Flashing and A/C not Blowing Cold? http://technoanswers.blogspot.in/2012/04/1992-toyota-camry-ac-control-light.html

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