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Thread: E38/T42 running stand alone

  1. #1
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    Default E38/T42 running stand alone

    Stupid quick question-

    LY6(keeping VVT) with 4L65E, the preferred ECM/TCM would be E38/T42 correct? and these will run standalone just fine with no BCM?

    A/C and all gauges will be canbus? nothing discrete?

  2. #2
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    Should be pretty straightforward, I'm not sure what used E38/T42 with a 4L60/65/70E (Express Vans have the LY6+4L80E from 08-09) combo. Yes, just those 2 modules without a BCM. Can't speak to the gauges, that can be a function of the platform of the OS (truck vs Vette vs Camaro, and so forth).

    I'd use the Express van ECM OS and TCM OS (4L80E), then segment swap in the TrailBlazer SS Trans and Trans Diag segments (4L70E) and disable the ISS. I know the OS #s line up for 2008. 2009 4L70Es have a different setup (no 3-2 solenoid I believe) so stick to 07-08.
    Last edited by ScarabEpic22; December 7th, 2017 at 04:59 AM. Reason: Corrected years
    ~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.

  3. #3
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    I think an 08 silverado E38 and T42 trans controller will work too. Did the express vans come with VVT?
    00 Silverado Z71, LQ9 w/ LS3 heads, BTR cam, Whipple 2.9@8#, 4l80E

  4. #4
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    Quote Originally Posted by LastCall View Post
    I think an 08 silverado E38 and T42 trans controller will work too. Did the express vans come with VVT?
    Yes they did, the LY6 engine has AFM and VVT. A Silverado with E38/T42 would work too and would likely have the same TCM OS # as the TrailBlazer and Express making it another good candidate for segment swapping.
    ~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.

  5. #5
    Lifetime Member DURAtotheMAX's Avatar
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    Quote Originally Posted by ScarabEpic22 View Post
    Should be pretty straightforward, I'm not sure what used E38/T42 with a 4L60/65/70E (Express Vans have the LY6+4L80E from 07-09) combo. .
    2008-2009 only.

    2007 Express van was still Gen III/LS1b PCM.
    2005 Silverado, CC/SB, 4x4, LT, LILLY/Allison
    12.9s @ 108 mph

    many thanks to Ross and Paul

  6. #6
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    12617631/24239927 is a great combo.
    "All that is needed for the triumph of evil is that good men do nothing..."

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