servicing the HVAC unit in 05 silverado

Discussion in 'General Chevy & GM Tech Questions' started by anven, Jan 10, 2011.

  1. anven

    anven Member

    Hi, does anyone have any idea on how to access/service the HVAC system? I am having issues with some air diverters that are not responding to the controls. It seems to be a very integrated unit and I am not sure where to "tap" in.

    Thanks in advance.
  2. ZSI52

    ZSI52 Epic Member 5+ Years 500 Posts

    Is the air only blowing out certain vents?
  3. anven

    anven Member

    Yep. Cant make it blow at the feet. Windshield and front vents are fine
  4. ZSI52

    ZSI52 Epic Member 5+ Years 500 Posts

    Sounds like it maybe a actuator in your dash. What year truck is it and do you have the Digital HVAC system or just the regular manual HVAC?
  5. anven

    anven Member

    its a 2005. Manual controls (as in 2 knobs to select air direction and fan speed, with 2 slider switches for temperature control for driver/passenger).

    Where are the actuators located?

  6. ZSI52

    ZSI52 Epic Member 5+ Years 500 Posts

    The Temperature actuator for the driver side in above the Hump below your dash. You have to remove the HVAC cover to get to it, The passenger Side Temperature actuator and the Mode/direction Actuator are on top of the HVAC box underneath the air vents. You'll need to take apart the top of your dash and most likely remove your vent housing to get to them.

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