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Thread: 12216125 os current for 4l60e need match for 80e segment swap

  1. #1
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    Default 12216125 os current for 4l60e need match for 80e segment swap

    02 4wd tahoe currently 12216125os checked drop box with no luck does anybody know where i can find a matching os for a 80e to do a segment swap, and then i have a efi live and i have 0 experience if someone could tell me where i can find information on doing the segment swap from the beginning, alot of information assumes i would know the basics but i dont any help would be extremely helpful thanks in advance

  2. #2
    Joe (Moderator) joecar's Avatar
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    There may not be a 12216125 4L80E file... you may have to run a 12212156 4L80E file instead.

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    Thanks i appreciate the reply, i searched all weekend and when i would try to open a different os number for comparison, my unit told me it was wrong and wouldnt open it, so i ordered a harness that will operate the 80 off of the 60 tune hopefully it works as it says it will thanks again

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    Quote Originally Posted by james workman View Post
    02 4wd tahoe currently 12216125os checked drop box with no luck does anybody know where i can find a matching os for a 80e to do a segment swap
    Sorry for the late reply.

    The 2002 Express van with an L31 5.7L engine had a 4L80E as an option. This should be in the database somewhere. If you can't find it, I can upload it.

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    Quote Originally Posted by WhisperPC View Post
    Sorry for the late reply.

    The 2002 Express van with an L31 5.7L engine had a 4L80E as an option. This should be in the database somewhere. If you can't find it, I can upload it.
    Thanks but way to late if i had known before i wouldnt have ordered that 250.+ harness thats useless changed os and using an 80 segment now never the less your input is appreciated thanks

  6. #6
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    Quote Originally Posted by WhisperPC View Post
    Sorry for the late reply.

    The 2002 Express van with an L31 5.7L engine had a 4L80E as an option. This should be in the database somewhere. If you can't find it, I can upload it.
    I can't find this. I'm needing a 4L80e equipped 12216125 OS
    -John

    1991 RCSB 2WD Sierra LQ4 swap, 220/224 112 cam, Twin VSR 6766 turbos
    4L80e w/shift kit, PY 3600, and 3.73 gears.
    22 PSI and E85, 4300# with driver. 9.7@138, 1.47 sixty
    :drivin:

  7. #7
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    Avalanche with the 8.1 had an 80E behind them, were DBW, and used this OS. You might need to bench flash a PCM, I havent found any tunes in EFILive format with this OS and 80E trans segment.
    ~Erik~
    2013 Sonic RS Manual - 1.4L I4T E78, starting the mods
    2008 TrailBlazer SS 3SS AWD Summit White - LS2 E67/T42, bolt ons, suspension, etc.
    2002 Chevy TrailBlazer LT 4X4 Summit White - 4.2L I6 P10, lifted, wheels, etc.

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    Quote Originally Posted by LS1FREEK View Post
    I can't find this. I'm needing a 4L80e equipped 12216125 OS
    Sorry about the delay. Here it is.

  9. #9
    Joe (Moderator) joecar's Avatar
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    Close... but he's looking for 12216125.

  10. #10
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    Sorry. I must have misread the OS number ... twice.

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