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  1. #1

    Default 1999 suburban heat/ac control issues

    The heat/AC control on my 1999 Suburban will not operate correctly. It works at times only on high but does not push the air out up front like the rear air does. At times it(the fan) will stop completely . At random it will come on again. For awhile if you pushed the switch up or down or contorted it the(fan) would come on. That no longer helps.
    Is their a way of cleaning the contacts inside the switch unit or is it toast?

  2. #2
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    Default

    Unit is toast if it is the unit. You might also have an overheating blower motor resistor. Also you might have a bad actuator on the HVAC.
    Mike

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  3. #3
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    Parkersnine, I just finished a huge post for this particular application. LOL...let me get you the link.

    ---------- Post added at 10:22 PM ---------- Previous post was at 10:21 PM ----------

    Have a look at this post. I hope this helps explain what is wrong with the controller.
    Steven



    "The Sarge"
    1999 Chevy Suburban LT- K2500
    7.4 454 Vortec, 4WD
    305/70/16 on Eagle Alloy




  4. #4

    Default 1999 Suburban ac/heater control issues

    Springthing thanks! I am wondering if you have the correct part number and GM part name. If not its not that big a deal.

  5. #5
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    I certainly do....

    part #16192099 For part name all I have is "switch as"

    Hope this helps!
    Steven



    "The Sarge"
    1999 Chevy Suburban LT- K2500
    7.4 454 Vortec, 4WD
    305/70/16 on Eagle Alloy




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