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  1. #1
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    Default Module locations

    I am looking for locations on an ECM and a PCM on A 04 Grand Prix and a diagram for under driver side dash.

  2. #2
    GrandPrix Junkie SgtMarshal's Avatar
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    Default Re: Module locations

    the ecm and pcm should be located under the airbox. no idea where to find the diagram.

  3. #3
    Turbo is the way to go. Fivefingerdeathpunch's Avatar
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    Default Re: Module locations

    ECM = PCM, they are both the same things.

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  4. #4
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    Default Re: Module locations

    Quote Originally Posted by Fivefingerdeathpunch View Post
    ECM = PCM, they are both the same things.
    I was told by summit city Chevrolet they aren't.

  5. #5
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    Default Re: Module locations

    Quote Originally Posted by SgtMarshal View Post
    the ecm and pcm should be located under the airbox. no idea where to find the diagram.
    Trying to figure out if anything is missing under the dash because there is three wires that don't plug in to anything.

  6. #6
    Turbo is the way to go. Fivefingerdeathpunch's Avatar
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    Default Re: Module locations

    Then they should have given you better information as to what they are talking about then.

    The PCM is the power control module that is located in the airbox, the electronic control module or the ECU as other call it is the same thing if you ask me. It controls the engine and transmission.

    The other modules in the car are the ABS module, the BCM or body control module that's normally behind the glove box somewhere and the airbag stuff.

    That car is too old to have things like FPCM and TCM for the fuel pump and transmission.
    Last edited by Fivefingerdeathpunch; 1 Week Ago at 05:12 PM.

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  7. #7
    GT Level Member wstefan20's Avatar
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    Default Re: Module locations

    I know from the junkyard the vcim/ on star module is under the center console trim, don't have a diagram but easy to get to. The Sirius xm module is in trunk and pcm is under air box bcm is under driver's side dash. Hope that helps some

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