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Thread: 4l80e swap into 1260691 pcm

  1. #1
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    Default 4l80e swap into 1260691 pcm

    I have a 2005 Silverado Z71 4x4 with push button (autotrac) transfer case that I am swapping a 4l80e into. The O.S is 12606961 and I can't find a 4l80e segment swap to match the OS. Any help with this is very much appreciated, thanks for any answers.

  2. #2
    Joe (Moderator) joecar's Avatar
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    Might be hard to find unless someone has one...

  3. #3
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    Seems to be that way, can it be flashed as a new operating system that is compatable? I have only ever seen one file which claims to have the segment in the right OS, but it is for HP tuners and I don't have the software to even check it. :(

  4. #4
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    Check your vin on GM tis and see if there is a newer OS. If I have the vin I can pull the latest calibration

  5. #5
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    Sorry for not posting initially, the vin is 1GCEK19B55Z298476

  6. #6
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    Well 12606961 is a newer OS the 12592618 was an older more common OS that I have a bunch of 4l80 files

  7. #7
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    Are they compatable/flash-able into my truck? Really appreciating this help!

  8. #8
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    Google GM tis and punch your vin in to get all the Calibration data

  9. #9
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    Sweet thanks for all your help!

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