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Thread: scanning not-officially supported PCMs?

  1. #1
    Lifetime Member Aloicious's Avatar
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    Default scanning not-officially supported PCMs?

    hey guys, I have a friend who needs some help setting the CKP offset on his '97 L31...now I was told in the past that although the 96 and 97 PCMs aren't officially supported, and are definantly not supported by the tune tool, that I should still be able to scan the earlier blackbox PCMs. I'm wondering if I'd be able to view the CKP offset on it?
    1996 c1500 gen1e 5.7L - the "LS31", 24x CNP, LS2 coils, modified T56, 12200411PCM running COS3, zz4 cam, custom MPFI, etc. coming soon: Twin Turbos

  2. #2
    Lifetime Member GMPX's Avatar
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    Really, the only way to know is connect to the vehicle and validate the PID's.
    I no longer monitor the forum, please either post your question or create a support ticket.

  3. #3
    Lifetime Member Aloicious's Avatar
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    yeah, thats what I was thinking might be the case.
    Thanks!
    1996 c1500 gen1e 5.7L - the "LS31", 24x CNP, LS2 coils, modified T56, 12200411PCM running COS3, zz4 cam, custom MPFI, etc. coming soon: Twin Turbos

  4. #4
    Joe (Moderator) joecar's Avatar
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    If a GM PCM supports OBD-II then the V7 scantool:
    - will be able to scan the OBD-II data,
    - will most likely be able to log pids, you may have to change the Scan Mode (see Edit->Properties->Logging-Scan Mode).

  5. #5
    Lifetime Member Aloicious's Avatar
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    okay, thats good to know, my '96 has the 411, so I don't have a local truck to try it on. I don't actually need to do a full blown LOG, but I need to view the live CMP retard offset live data in order to set the distributor correctly.
    1996 c1500 gen1e 5.7L - the "LS31", 24x CNP, LS2 coils, modified T56, 12200411PCM running COS3, zz4 cam, custom MPFI, etc. coming soon: Twin Turbos

  6. #6
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    Ja..

    Select vortech ECU... and it will work like a charm... The issue in v7 and slow scanning was solved.... It was a main gripe I had... This is by far the best scanner I've ever used.
    "All that is needed for the triumph of evil is that good men do nothing..."

  7. #7
    Lifetime Member Aloicious's Avatar
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    excellent. good to have someone who as actually tried it out.

    me too, EFILive is the best. in fact I just setup my site as an efilive reseller, I stand by the products I believe in.
    1996 c1500 gen1e 5.7L - the "LS31", 24x CNP, LS2 coils, modified T56, 12200411PCM running COS3, zz4 cam, custom MPFI, etc. coming soon: Twin Turbos

  8. #8
    Member Whipped383's Avatar
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    I Know with my generic scan tools Iv entered in the info as a 98 when the truck was actually a 97 and it wouldnt even read data from it. If things dont work for you I have a scanner that will work you can borrow if you want.

  9. #9
    Lifetime Member Aloicious's Avatar
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    no we're good, he ended up getting it done at a shop so I never even tried to read it.
    1996 c1500 gen1e 5.7L - the "LS31", 24x CNP, LS2 coils, modified T56, 12200411PCM running COS3, zz4 cam, custom MPFI, etc. coming soon: Twin Turbos

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