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Thread: A/C unit gone crazy

  1. #1
    Rafterd's Avatar
    Rafterd is offline Cadillac Owners Fanatic
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    A/C unit gone crazy

    Well today I decided to install XM radio in the Caddy. I removed the radio head unit, installed the antena box, then reinstalled the radio. Got all the radio working good. we go for a drive and I notice there is heat blowing out the a/c vents on the drivers side. Checked the passenger side and the is freezing cold over there. So now when I turn the temp down to 60, it blows cold on the passenger side, but is hot on the drivers side!!!!! When I turn it to 90 it blows heat out the heater down low, which is right. What in the world could I have done to cause that????

    Bill


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  3. #2
    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
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    Re: A/C unit gone crazy

    I suspect you knocked the linkage off of the drivers side air mix door actuator.

  4. #3
    Rafterd's Avatar
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    Re: A/C unit gone crazy

    Well if it is behind the radio, that is most likely what happened.

    Bill

  5. #4
    Ranger's Avatar
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    Re: A/C unit gone crazy

    I'm not exactly sure where it is, but might be close. It sounds like the most logical explanation. I'd check that first.

  6. #5
    Rafterd's Avatar
    Rafterd is offline Cadillac Owners Fanatic
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    Re: A/C unit gone crazy

    Well I can"t find it. I have 1340, 1341, 1343, 1344 codes which are blend motors. They all go back to the control unit. I guess it went bad, I don't know what else. I guess I will have to take it to the dealership and find out.

    Bill


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