Car Problem Reports

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

Chevrolet Silverado 1500 Problem
63 Reports
Me Too

Model Years Affected: 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2010, 2011

Average Mileage: 120,182 mi (35,000 mi - 206,000 mi)


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, , 80,000 mi

    ac blows hot air on drivers side, have to pull over and restart the engine this sucks big time

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  • Visitor, , 80,000 mi

    Left drivers side vents blowing hot air when ac on..... passenger side blowing cool air

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  • Visitor, , 103,000 mi

    Heat on all the time, can not turn off

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  • Visitor, , 116,000 mi

    a/c and heat all comes out of defrost vent and cannot switch from hot to cold without shouting off engine for a little bit.

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  • Visitor, , 121,000 mi

    Ditto. Occasionally the driver side air will go from AC to heat! Have to stop the car and restart it to get it to be AC again. Time to sell and buy a Ford.

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  • Visitor, , 206,000 mi

    ac and heat doesnt work,fan worksin three of four speeds.

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  • Visitor, , 129,000 mi

    heat on the left side failed. replaced actuator, but unfortunately heater core failed at the same time so i had dto replace that too

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  • Visitor, , 100,000 mi

    Drivers side AC will intermittently switch to heater. Only remedy once heat starts is to restart engine. Seems to happen after relative high speed and slow down, will kick off when acceleration resumes. Also seems to happen between 75-85 deg outside temp the most often. It has become major annoyance but expensive fix.

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  • Visitor, , 199,236 mi

    can not change air delivery from floor outlets

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  • Visitor, , 85,000 mi

    The passenger side air blows only hot air, because the acctuator door is broken. I took the vents out and sealed them so that no air comes out of the passenger side vents. This is obviously not the best solution, but the acctuator is so hard to get to that it isn't worth it to me.

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