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Thread: 12606961 4l80e segment swap

  1. #1
    Tuner in Training
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    12606961 4l80e segment swap

    Does anyone know what the work around is for this OS in a 2005 Silverado for a 4l80e segment swap. I've seen a few threads here and there about this but no answers. It seems as though a segment swap is impossible for this OS. My 4l80e is ready to go but I'm just trying to figure this part out.

  2. #2
    Senior Tuner Lakegoat's Avatar
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    What do you have in there now for a trans? Is this an e-40?
    2000 Camaro SS 2015 L83 port injected, Whipple 3.0, 4L80E, 8.8 Ford
    2013 Silverado 5.3, 6L80k 8.8

  3. #3
    Tuner in Training
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    It's a 3rd gen style PCM.

  4. #4
    Tuner in Training
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    Thanks for your help.
    Attached Files Attached Files

  5. #5
    Senior Tuner Lakegoat's Avatar
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    Looks like you already have it switched to 4L80 in the trans section?
    2000 Camaro SS 2015 L83 port injected, Whipple 3.0, 4L80E, 8.8 Ford
    2013 Silverado 5.3, 6L80k 8.8

  6. #6
    Tuner in Training
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    Yes but I still need to do a segment swap. It shifts through all the gears fine but I have to manually command the tcc pwm off or the converter will be locked all the time.

  7. #7
    Tuner in Training
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    I e mailed hp tuners customer service and they told me if I want advice I need to come here. Basically all I heard was we don't know you're SOL. It's not like I'm asking for tuning advice. I just don't know if I need to buy another PCM with a different operating system or if I can convert this one so it will run the 4l80e.

  8. #8
    Tuner in Training
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    Thanks so much man. This will help me and a ton of other people out in the future.
    Last edited by EmmerichLSx; 11-27-2015 at 09:03 PM.

  9. #9
    Potential Tuner
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    i have a os system 12606960 , i tried to use this file for a segment swap on my system but the swapper stays greyed out
    trying to go from 60 to 80 .
    any help ideas?

  10. #10
    Im in the same boat here.. What did you end up doing to get the segment swap to work???? Please share with us!

  11. #11
    Senior Tuner
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    PM sent.

  12. #12
    Potential Tuner
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    Mar 2019
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    Hello I have an Ls2 swap with 4l80e and when put in to drive it stalls terribly...i re wired the iss sensor already but nothing else was done to t42 tune... I have a T42 out of 05 Gto and haven?t touched anything in the tune... need help