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Thread: Full heat on Driver's side, Cool on passenger's side

  1. #1
    Join Date
    Jan 2005
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    Full heat on Driver's side, Cool on passenger's side

    A few days ago, my 2004 Escalade A/C went to full heat (upper outlets) while the passenger side continued to work fine. I turned it off for a while and turned it back on and it worked fine until today, when it did it again. Rear A/C works fine as long as compressor is running, as does the passenger side.

    I'm thinking from what I've read, that we may be talking "mixing door/operator" and/or return air sensor for driver's side that thinks it's very cold on that side. Then again, maybe the HVAC computer???

    Any ideas, fella's ??

    Thanks for your time.


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  3. #2
    nathanjax's Avatar
    nathanjax is offline Cadillac Owners Connoisseur
    Automobile(s): 2007 esKONali
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    Re: Full heat on Driver's side, Cool on passenger's side

    Quote Originally Posted by Pablo 94STS View Post
    A few days ago, my 2004 Escalade A/C went to full heat (upper outlets) while the passenger side continued to work fine. I turned it off for a while and turned it back on and it worked fine until today, when it did it again. Rear A/C works fine as long as compressor is running, as does the passenger side.

    I'm thinking from what I've read, that we may be talking "mixing door/operator" and/or return air sensor for driver's side that thinks it's very cold on that side. Then again, maybe the HVAC computer???

    Any ideas, fella's ??

    Thanks for your time.
    Blend door actuator... very common on all GM's

    http://www.cadillacforums.com/forums...em-newbie.html

  4. #3
    Join Date
    Jan 2005
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    Galveston
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    Re: Full heat on Driver's side, Cool on passenger's side

    Thanks LOADS ! ! ! !

  5. #4
    Join Date
    Jun 2013
    Posts
    1
    I have a 2005 escalade with the same problem. Lately when I start the car the ac will start on cold, and the driver side vents will switch to hot after a few minutes. If the ac doesn't start on the drivers side it will not switch to ac. Everything else works fine. Is this still the temperature blend door? Or is it something else?

  6. #5
    the cadillac man's Avatar
    the cadillac man is offline Cadillac Owners 10000+ Posts
    Automobile(s): 03 cadillac escalade
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    Quote Originally Posted by mmaloneyx2
    I have a 2005 escalade with the same problem. Lately when I start the car the ac will start on cold, and the driver side vents will switch to hot after a few minutes. If the ac doesn't start on the drivers side it will not switch to ac. Everything else works fine. Is this still the temperature blend door? Or is it something else?
    Most likely as mine did like this
    I took the actuator out and took it apart and cleaned the terminals for the sensor that reads the position of the actuator and haven't had this problem again


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