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Cadillac Audio, Video and Security Systems Discussion, Help Please in Item Specific Cadillac Discussion; U1128 - Loss of Communications with IRC I get this code does anyone have any info. I have a aftermarket ...
  1. #1
    mrvspitbulls's Avatar
    mrvspitbulls is offline Cadillac Owners Fanatic
    Automobile(s): 05 Cadillac STS
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    Apr 2008
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    Help Please

    U1128 - Loss of Communications with IRC

    I get this code does anyone have any info. I have a aftermarket headunit that a local stereo shop installed they said they used the new metra box with a downloaded update. Also the sound dims out when i satrt the car and put it in reverse or if a message comes up on the dic (like low range or tpms)

    Please help stereo shop has no clue anymore.


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  3. #2
    Necrosan is offline Cadillac Owners Enthusiast
    Automobile(s): 1994 Cadillac Eldorado Touring Coupe
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    Jan 2008
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    Re: Help Please

    Sounds like they tapped into something they shouldn't have if you didn't have this issue before, or used the wrong metra kit.

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