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Thread: 0411 swap now to 12586243 for flex fuel

  1. #41
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    May 2008
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    Well, at least the wiring for mine isn't the only one that is messed up. I was figuring that there was a reason GM made the connectors different, so I wasn't getting a warm fuzzy feeling about just switching the caps on the connectors. I'll just change the whole engine wiring harness back again.
    E85 is NOT flex fuel.

    2003 Chevy S10 4.3L LU3 LS1B Auto
    48 LB injectors
    Race Proven Motors 2114 intake
    T70 turbo.

  2. #42
    Member CC&M's Avatar
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    Dec 2008
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    I can email you a pdf for the PCM pinout if you want. send me a PM I'll get it to you.

  3. #43
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    As far as I can tell, the wiring is the same, so you should just be able to swap the connector caps:
    http://i172.photobucket.com/albums/w...b/DSC02533.jpg
    http://i172.photobucket.com/albums/w...b/DSC02532.jpg
    E85 is NOT flex fuel.

    2003 Chevy S10 4.3L LU3 LS1B Auto
    48 LB injectors
    Race Proven Motors 2114 intake
    T70 turbo.

  4. #44
    Senior Member
    Join Date
    Aug 2007
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    126

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    Red cap is for the 512k pcm

    Green cap is for 1mb pcm

    As far as trucks go, wiring is identical.

    All I did on mine when I swapped from the 0411 pcm to the 6243 was swap connector caps, all worked well for me. I did notice however in the cal that I had for my s10 I had to recal the gas gauge, may not be your case.

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