Results 1 to 3 of 3

Thread: 2007 4L80E Swap OS problem

  1. #1
    Tuner in Training
    Join Date
    Dec 2016
    Posts
    10

    2007 4L80E Swap OS problem

    I have looked all over HP Tuners tune repository can not find a 4L80E operating system T42 OS 24239036 with ecm E38 OS 12614088. Looked in all 07, 08 & 09 Silverado's, Sieras, Suburban's, Vans and even Escalade hoping to find a OS match with 4L80E. I am at a loss, can anyone help. It is for a 07 Silverado swapped in a 6.2L with 4L80E.

  2. #2
    Senior Tuner LSxpwrdZ's Avatar
    Join Date
    Dec 2008
    Location
    on the Dyno
    Posts
    1,825
    Likely won't find an exact OS match. Just pick a 2007-2008 80E OS and do a write entire with it to your T42 and voila you have a 80E T42.
    James Short - [email protected]
    Located in Central Kentucky
    ShorTuning
    2020 Camaro 2SS | BTR 230 | GPI CNC Heads | MSD Intake | Rotofab | 2" LT's | Flex Fuel | 638rwhp / 540rwtq
    2002 Camaro | LSX 427 | CID LS7's | Twin GT5088's | Haltech Nexus R5 | RPM TH400

  3. #3
    Senior Tuner
    Join Date
    Nov 2006
    Posts
    2,605
    This is made just for vehicles that do not have a compatible OS available.

    https://www.pcmofnc.com/product/pcm-...rsion-harness/
    Tuner at PCMofnc.com
    Email tuning!!!, Mail order, Dyno tuning, Performance Parts, Electric Fan Kits, 4l80e swap harnesses, 6l80 -> 4l80e conversion harnesses, Installs