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2004 gto bcm

This is a discussion on 2004 gto bcm within the GTO forums, part of the Vehicle Specific category; I took my gto to the dealer because it was having a hard time starting and they said the BCM ...

  1. #1
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    2004 gto bcm

    I took my gto to the dealer because it was having a hard time starting and they said the BCM had to be replaced. Is this common and what is it used for?

  2. #2
    Veteran 0rion's Avatar
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    98 Formula
    06 duramax

    what exactly was it doing when it wouldn't start? Just turning over, starting for a few seconds and shutting off, or not doing anything?

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    BCM

    Acted like the battery was dead but it tested ok.

  4. #4
    Smiles for 9.5 Years cammed goat's Avatar
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    Phantom Black Metallic
    2004 GTO M6

    I have heard of this issue. The BCM would lose memory and would either have to be reflashed or replaced with the key fobs.

    If I recall, the BCM controls the anti-theft system, exterior and interior lighting, radio and HVAC controls.

  5. #5
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    BCM

    Dealer said they ordered the BCM and will replace it but nothing was mentioned about the keyless remotes which according to ALLDATA must be replaced. Why are new remotes required vs. reprogramming them.

  6. #6
    Smiles for 9.5 Years cammed goat's Avatar
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    Phantom Black Metallic
    2004 GTO M6

    Once the fobs are keyed to the BCM, it's a done deal.

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