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  1. #1

    Default No Heat/AC out of the front dash vents

    Hi everyone.
    The truck with the issue is a 2006 2500HD (silverado). The blower is working but air only comes out of the top dash vents (defroster vents). I can't seem to get anything (hot or cold) out of the front of the dash and possibly also the foot vents. I don't have any problems controlling hot and cold so its not a blend door. Does anyone know what controls this or what/where I might need to check?

    Thanks

  2. #2

    Default

    Either the mode actuator (which controls the mode/defrost/vents/floor setting) has gone bad or the plastic gears for the mode door have stripped. I'm willing to bet it's the former, as actuators are common problems in our trucks.

  3. #3

    Default

    So are you referring to the "head unit" controller in the dash? Does the entire unit typically need to be replaced or is there a separate part of that which can be swapped? Also, do you have any tips on diagnosing that part as being bad?

  4. #4

    Default

    No, I'm referring to the actuator that controls the mode door. As for diagnosis, a quick search on Google should get you moving. Here's a link to help you: http://www.lmgtfy.com/?q=diagnose+chevy+mode+actuator
    Last edited by SurrealOne; 05-16-2012 at 03:48 PM.

  5. #5

    Default

    x2 what he said ^^^^^^^^

    I had the same problem in my truck. I couldnt get it to go to the defroster. Found that out on a cold rainy night driving through the mountains. The actuator had gone bad.
    Last edited by dsfloyd; 05-16-2012 at 11:56 PM. Reason: correction
    David
    2004 Silverado 2500 Crew Cab 4x4, AMSOIL EA air filter, Granatelli MAF sensor, Throttle body spacer, Magnaflow exhaust (true dual to 2 in 1 out muffler), 6" ProComp lift (add a leaf and 5" superlift rear block), Bilstein shocks, 35's (Cooper Disoverer ST) and 4.10 gears, Rhino Liner, EGRUSA fender Flares and widow visors, extended stainless steel brake lines, firestone airbags w/onboard air compressor, Pioneer Avic X940BT navigation, Accel backup camera.
    http://www.gmtruckclub.com/forum/sho...Silverado-2500
    1960 Land Rover Series II 88
    2001 Pontiac Sunfire
    2013 Toyota Avalon Limited (Wife's Car)
    NRA Life Member

  6. #6

    Default

    Quote Originally Posted by SurrealOne; Here's a link to help you: [URL
    http://www.lmgtfy.com/?q=diagnose+chevy+mode+actuator[/URL]
    ROFL....
    Never saw that google page before....
    Last edited by jake's silverado; 05-16-2012 at 08:03 PM.
    Finally a signature and Avatar! I also posted some pics in the Gallery.
    2011 2500HD Crew Cab 4X4 Z71 6Liter.
    2011 Outback Travel Trailer 260FL
    So Happy to not be on the edge of GVWR Over Load!!

  7. #7

    Default

    I called up Orielly's and they have 4 different options for that part (2 of which don't sound right from the description). However, I can't tell which of the other 2 are correct...



    Dorman OE Solutions - Air Door Actuator

    $139.99 Each


    Add to Printable List
    Online: Available

    Call Store: Usually Avail. 24 Hrs

    Find store with item




    • Limited Lifetime Warranty
    • Multiple Applications

      • Controls Air Conditioning Blend Door
        1. - Right
        2. - Temperature
        3. - Main Unit
        4. - Manual And Automatic Air Conditioning

      • Controls Air Conditioning Blend Door
        1. - Left
        2. - Temperature
        3. - Main Unit
        4. - Manual And Automatic Air Conditioning


    Part # : 604-106 | Line: DOR



    Dorman OE Solutions - Air Door Actuator

    $64.99 Each


    Add to Printable List
    Online: Available

    Call Store: Usually Avail. 24 Hrs

    Find store with item




    • Limited Lifetime Warranty
    • Multiple Applications

      • Controls Air Conditioning Blend Door
        1. - Mode
        2. - With Automatic Controls

      • Controls Air Conditioning Blend Door
        1. - Mode
        2. - With Manual Controls
        3. - Without Custom Front Floor Console (D07)



  8. #8

    Default

    I suggest calling a stealership and requesting an over the phone quote for the mode door actuator. When they feed you a price ask them for the part number, too. Once you have the OEM part number you can feed it to O'Reilly's to get the proper actuator from them. I'm betting it's the 140 dollar unit, as 65 sounds way, way cheap for these (stealerships usually want $260-ish for them).

    Surreal

  9. #9

    Default

    Yeah, thats a good idea. I'll give it a shot. As far as price, its just a WT trim so nothing fancy on the controls or anything... Hopefully its the cheap one!

  10. #10

    Default

    Yeah.... the stealership is a little stingy with their part numbers apparently. Would only give me a price.... ($80)
    Does anyone out there have the ability to look this part up for me based on the last 8 of the VIN?

    6E256165

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