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Thread: Greetings

  1. #1
    Carb and Points!
    Join Date
    Jul 2021


    Hi Everyone,

    I'm doing an LS swap on a G Body cutlass that I've been working on and off on for 15 years. Yea I know that's a long time. I got 4.8 ls motor and 4l60e from a 2007 Sierra. I have the original harness, computer, pedal, dbw, etc. Looking for a stock xdf Any suggestions?

  2. #2
    Super Moderator dave w's Avatar
    Join Date
    Feb 2011

    Perhaps 2007 was the last year the 1 meg PCM (blue / green connectors) was used?

    Perhaps converting to an older 1 meg PCM that has a .xdf is an option?

    Perhaps the computer you have is the E38 ECM that is using the T42 TCM for the 4L60E?

    Gearhead-efi link for OBD2 tuning information:

    dave w

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