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    Gearstix's Avatar
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    2002 Trailblazer headunit install problems.

    My buddy installed a head unit in a 2002 Trailblazer, and is having some problems.

    Here's what he says.

    i have the wiring harness from walmart, for an '02 trail blazer. Hooked everything us as it should be. The CD played gets power, but will not come on. The reset light does flash, but resetting it does not do anything. i know for a fact the CD player is good.

    The stock radio can be plugged in and will work perfectly, but i cannot get anything out of the aftermarket
    Should he get a 'pac module' or similar?



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    Re: 2002 Trailblazer headunit install problems.

    Sounds like it may have something to do with the harness...is he using the OEM harness or did he get a harness that will allow the addition of an aftermarket radio? I have a Silverado ('08) and you need either a harness from Axxes and one from PAC (for the steering wheel controls) or, after going that route and calling PAC about a question, I discovered that they have a harness that will handle both the HU and the steering wheel. Of course, your buddies is an '02 so it may not be that complicated.




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    Re: 2002 Trailblazer headunit install problems.

    I'm not sure, he said he bought a stereo harness for it from wal-mart.



    Quote Originally Posted by stuckinok View Post
    Mach 5 is the **** and dont let the low price fool you. I hated Canada until I used Mach 5 products.

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    Re: 2002 Trailblazer headunit install problems.

    Quote Originally Posted by Gearstix View Post
    My buddy installed a head unit in a 2002 Trailblazer, and is having some problems.

    Here's what he says.



    Should he get a 'pac module' or similar?

    i think my friend had the same problem in his 04 Envoy. i think the harness was no good. so we just ran new wires.



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    Re: 2002 Trailblazer headunit install problems.

    that harness does not have acc behind the radio so he can purchase the interface harness or run a new acc to the orange wire in the ignition harness






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    Re: 2002 Trailblazer headunit install problems.

    tap a fuse that only gets power when the key is turned to the on/start position. That's what I did. I also only used the 7 dollar harness from metra. I used it in my 01 alero and my current 08 grand prix.. I just dont have chimes and my cars didnt have onstar anyway so no big deal. EDIT you want to connect this wire to the red acc wire on the headunit's harness




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    Re: 2002 Trailblazer headunit install problems.

    Quote Originally Posted by Worlddre View Post
    run a new acc to the orange wire in the ignition harness
    this. I always fuse the wire, too, just to be on the safe side.



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    Re: 2002 Trailblazer headunit install problems.

    you can post on there that i figured it out. I have to use an "ad a circit" from autozone off of a fuse the was on with the key as the acc power.
    Thanks guys.



    Quote Originally Posted by stuckinok View Post
    Mach 5 is the **** and dont let the low price fool you. I hated Canada until I used Mach 5 products.

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    Re: 2002 Trailblazer headunit install problems.

    buy a "gmrc-01"

    you need this interface to keep the factory functions (door chimes, etc...)



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