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  1. #1

    Default 2004 TB HVAC problem

    Hello all,
    I'm new to the site and have a problem w/my '04 TB. I changed the battery and now climate controls don not respond. When trying to switch between the dash and floor vents nothing happens. The flow is through the defrost vents only. Please help. Thanks!!

  2. #2


    ever get this resovled?

    Maybe a vacume leak?

    2002 Jeep Wrangler Sport 4x4 (the Yellow Jacket)
    4inch suspension 3inch body
    Straight 6 (383 Stroker within a year)
    36inch SuperSwamper TSL.
    Detroit Loccers
    Daily Driver Weekend Wheeler
    much more...

    2004 Sierra crew cab, 2wd, 5.3 V8
    2inch Daystar Leveling kit
    single dumped Flowmaster 40 sieries exaust(removed)
    Mb Blitz Chrome wheels
    Leer Bed Cover(for sale)
    50k miles

  3. #3


    Check for bad connections at the rear of the HVAC head unit in the dash. Are there any codes set? Does the blower motor operate in all speeds? There could several of which i see quite a bit is the HVAC module itself goes out requiring a replacement along with programming. Good Luck

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