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No Cold or Hot Air through Vents

Discussion in 'Chevy C/K Truck Forum' started by mrlucio79, Feb 5, 2012.

  1. mrlucio79

    mrlucio79 New Member

    Hello All,

    It's been a long time since I have posted to this website. I need assistance figuring out why my cold and hot air does not blow through the driver and passenger vents. I do feel the air backing up and leaking through the top of the dash board. Could the directional knob be bad?

    1999 Silverado LS

    Thank You,

  2. murdog94

    murdog94 Epic Member 5+ Years 5000 Posts

    sounds like the blend door is stuck closed..

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