After market stereo and theft system

Discussion in 'GMC Truck Forum' started by partsman, Jan 20, 2018.

  1. partsman

    partsman Full Member

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    So this 2003 gmc 2500hd I bought has an after market pioneer in it, and the old oem is still wired up and sitting under rear seat, fellow said he had to do that so theft system and stuff would still work, is there not a way to remove the radio?
    Seems odd to have it in the way.
     
  2. Kennyray

    Kennyray Moderator
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    They make wireing kits that have modules for the chimes and such. Check Crutchfield.
     
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  3. gmctrucks

    gmctrucks Full Member

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    Kenny is right talk to a Tech I’m sure they can help you out.
     
  4. dirtrider73068

    dirtrider73068 Senior Moderator
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    There is boxes or modules that you wire in to keep the anti theft and door chimes as those are wired into the factory radio. If everything is working like it should with how its setup you could leave it unless you don't want in there.
     
  5. partsman

    partsman Full Member

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    Thanks for the replies, my thing is that he had to install a big long harness which allowed him to run it to the back of the cab and stuff the radio loose under the seat, which seems silly, I had heard that all he should have done is bypassed it somehow, but I guess they sold him something more expensive, anyway now I bought a Du-Ha and have put it under the rear seat and even though the radio sits in it, it takes up space I could use for other things.
    This is what the item looks like.
    [​IMG]
    [​IMG] [​IMG]
    [​IMG]
     
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  6. MikeG

    MikeG Full Member

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    When I installed a aftermarket Radio in my rig I also bought the plug kit for the harness. Don’t quote me on this but I’m pretty sure that when (a shop) installs a aftermarket head unit in the newer rigs that the plug/ connector they use on the harness has jumpers installed.
     

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