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Thread: 04 Grand Prix Wiring question

  1. #1
    Newbie
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    Apr 2007
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    04 Grand Prix Wiring question

    I just replaced my 99 olds alero with an 04 grand prix. I took my clarion deck out of the alero and I want to put it in the grand prix. I went up to best buy to get the wiring harness (metra) but the guy told me that I need some type of modular adapter because all newer-year GM cars have the different options like Onstar wired together. He said I can go with the universal GM wiring but ill lose alot of my sensors i.e. tire and oil pressure as well as the door chimes. Is there anyway around this? I really don't want to spend $150 on a wiring harness if i dont have to. Is it possible to have the universal GM wires and not lose those features? Please help me out. thanks.

  2. #2
    Newbie
    Join Date
    Jun 2007
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    Alpharetta, GA
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    As far as I know, there is no way around it. You might be able to find something cheaper though. Check out pac-audio.com. They have a bunch of different harnesses for this type of application.

  3. #3
    Low Bitrate Zharvek's Avatar
    Join Date
    Jan 2005
    Posts
    71
    Hey, another 2004 Grand Prix...

    You should be able to find those converters that keep your chimes, and allow aftermarket headunits.

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