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  1. 01-06-2019 #1
    AzDon
    AzDon is offline
    Fuel Injected!
    Join Date
    Jan 2016
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    39

    Pinout adapter?

    I have a 91 g20 van that I would like to put a 4L80 into.... in place of the 700r4
    The current ECM is a 7747 and It looks like I need a 7427 ECM to run the 4L80...….
    Assuming that the pinouts are always the same on every 7427 and that all 7747 units would share the same pinouts...…. I'm wondering if anybody manufactures a set of adapter plugs that would fit the 7427 ECM and allow the existing van harness to plug into it and operate properly (?) ..... This harness adapter would also need the extra wiring out of the 7427 to run the transmission.....

    If plug-n-play products like this exist and work, I'm an interested buyer....

    I mis-spoke earlier..... My ECM in the 91 van is a 7747...
    Last edited by AzDon; 01-07-2019 at 08:58 PM.
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