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Chevrolet Avalanche 1500 Heating and AC Temperature and Air Delivery Mode Door Actuators May Fail

 
Chevrolet Avalanche 1500 Problem
20 Reports
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Model Years Affected: 2002, 2003, 2004, 2005

Average Mileage: 123,356 mi (69,561 mi - 215,000 mi)

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One or more heater & AC (HVAC) air delivery and/or temperature mode door actuator may fail. This can result in incorrect air delivery or temperature. If this occurs, fault code(s) stored in the HVAC control module should be available to assist with diagnoses.

  • Visitor, , 119,000 mi

    when air is on,suddenly it switches to full heat.If i stop and turn the engine off then restart the air works again.

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  • climate dual control both sides down to cold ac switch is on .blows cold air to passenger hot air on driver.
    not fixed yet . looking for repair shop

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  • Visitor, , 108,000 mi

    Intermittantly, hot air comes thru driver's side when all selectors are off. This can happen when A/C is on also, but passenger side is cold. No codes come up on computer when checked. Replaced driver's side actuator door once with an after-market product. It's still doing it. Temp fixes include turning off engine and restarting; turn knob to defrost to redirect air; and recently found that pressing the recirc button helps too while driving. Does the driver's actuator door need to be replaced again? Does it need to be a GM part?

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  • Visitor, , 85,000 mi

    Dual zone air delivery - one side blows a/c cooled air and the other blows heated air in spite of temp control settings

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  • Visitor, , 130,000 mi

    The problem that I have at times is the air condition is hot on the drivers side vents, but cold on the passenger side vents

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  • After battery removal air will only blow through defrost vents.

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  • Visitor, , 160,000 mi

    Climate control lights for the passenger no long illuminate, when setting is on cold, cold air will blow on drivers side vents, but heat (that is hotter then the blazes of hell) blows from the passenger vents.

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  • With air conditioning on, sometimes blows hot on passenger side, cold on driver. Sometimes opposite. Turn off engine, restart sometimes let's air conditioning work again

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  • Visitor, , 215,000 mi

    Problem came from a dead, dead battery and trying to jump start the vehicle. Got it started and replaced the battery to find my air was blowing cold out of the defrost and floor vents and the dash vents would not function. The problem may have been the dead battery and trying to run the AC blower and vents while starting. Perhaps it couldn't get enough amps to run right and burnt out the little motor or derailed the gears. I had the same problem at the same time with a drivers side rear passenger window regulator assembly. My passenger tried to open the window on the dead battery and the motor made some noise and the cables came off the tracks causing the window to fall. HINT. Make sure everything is shut off before you try to start your vehicle if the battery is low or you may lose similar functions. Replacement is the only solution.

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  • on off switch for a/c does not activate compressor.

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