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Thread: 6l80e with tap shift no BCM

  1. #1
    Tuner in Training
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    6l80e with tap shift no BCM

    Ive been doing a bit of research on 6l80e - e38 6.0lt conversion with tap shift, from what ive found you wire as per corvette 2011, and adjust the settings an the ecm but from what i can find it seems only EFI live offer options for tap up tap down input type as per picture.
    Is it just me, maybe i simply cant find the option, how have others got this to work.



  2. #2
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    looks like i found the option!!

  3. #3
    Are you using the t43 tcm? Can you elaborate on how you got it to work?

  4. #4
    Advanced Tuner HartRod's Avatar
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    Quote Originally Posted by xrelapse13 View Post
    Are you using the t43 tcm? Can you elaborate on how you got it to work?
    Under the general section you have to change the TUTD setting to "hardwired".
    69 Suburban Bagged & Blown: http://67-72chevytrucks.com/vboard/s...d.php?t=200387
    68 Farm Truck build thread-LS3/6L80/TVS1900: http://67-72chevytrucks.com/vboard/s...d.php?t=358692

  5. #5
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    Quote Originally Posted by HartRod View Post
    Under the general section you have to change the TUTD setting to "hardwired".
    Do you know what pins are used?
    Thanks

  6. #6
    Advanced Tuner HartRod's Avatar
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    My harness is modeled after a 2011+ Corvette.
    69 Suburban Bagged & Blown: http://67-72chevytrucks.com/vboard/s...d.php?t=200387
    68 Farm Truck build thread-LS3/6L80/TVS1900: http://67-72chevytrucks.com/vboard/s...d.php?t=358692

  7. #7
    Advanced Tuner HartRod's Avatar
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    Quote Originally Posted by s10mods View Post
    Do you know what pins are used?
    Thanks
    Here's a schematic.
    Attached Images Attached Images
    69 Suburban Bagged & Blown: http://67-72chevytrucks.com/vboard/s...d.php?t=200387
    68 Farm Truck build thread-LS3/6L80/TVS1900: http://67-72chevytrucks.com/vboard/s...d.php?t=358692

  8. #8
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    Hi Guys, Ive got a Nissan Patrol here with LS3 and 6L80, using the Nissan TUTD shifter.
    It doesnt have the extra position after D like a Corvette has to pull it into Sports mode.
    It will only move sideways into the TUTD position.
    Did you get your TUTD to work ok. I have it enabled and hardwired in the Corvette calibration
    Is there a trick to this
    Any help appreciated

  9. #9
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    Quote Originally Posted by Hooter View Post
    Hi Guys, Ive got a Nissan Patrol here with LS3 and 6L80, using the Nissan TUTD shifter.
    It doesnt have the extra position after D like a Corvette has to pull it into Sports mode.
    It will only move sideways into the TUTD position.
    Did you get your TUTD to work ok. I have it enabled and hardwired in the Corvette calibration
    Is there a trick to this
    Any help appreciated
    I have similar problem. Have you got the tap shifting working?

  10. #10
    Senior Tuner DSteck's Avatar
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    First off, you need to make sure he the resistor ladder for the switches matches what the TCM wants. You also need a way to tell the TCM what shifter position you're in. I'm not sure what you've got will relay that.

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  11. #11
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    I'm having a problem getting this to work with truck PCM/TCM (07 Yukon and 08 Escalade) - same problem, two different rigs.
    I have the pin in the TCM connector like it shows, the resistors like they show, and the TCM settings like shown. Tried every gear and still shows 'manual control off' and won't work.
    Any ideas? What am I missing??
    trans.jpgwiring - tap up tap down 07 corvette.gif

  12. #12
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    Where do you see 'Manual control off'? In hp tuners? I have similar setup. Hard wired resistors to the tcm an changed the hp tuners settings like you did but no success.

  13. #13
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    Quote Originally Posted by jonasj View Post
    Where do you see 'Manual control off'? In hp tuners? I have similar setup. Hard wired resistors to the tcm an changed the hp tuners settings like you did but no success.
    That was my customer, he is using a SnapOn scanner. I'm at the shop looking right now, and I think Tech2 calls it..
    Driver shift control - active
    driver shift request - none

    I have not programmed this TCM yet, but I believe it was last set to a truck, meaning it's looking for BCM tap shift. I just flashed it to a 08 Corvette with the Tech2, so now i'll try it again and see if the driver shift request changes.

  14. #14
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    Hi,
    Thought this might be useful for you.
    This company makes a TUTD module that works via CAN BUS and also displays gear information via any screen you like.
    https://www.facebook.com/video.php?v...933147&theater
    cheers

  15. #15
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    Hi, what ended up working here. Seems people are getting TUTD to work with NO BCM and WITHOUT the corvette tune.

  16. #16
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    Hey guys ive been reading alot and my biggest problem right now is my HP tuners seems to be missing options. i need to set to hardwired to get tutd to work

    2017-03-31.png6l80tutd.jpg

  17. #17
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    Does anyone have any updates?

  18. #18
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    Any updates?

  19. #19
    Advanced Tuner
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    Any updates? Seems when poeple figure this out they don't feel like posting what's actually required to fix it??

  20. #20
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    Anyone figured out how to get tap shift working properly without the BCM or the corvette tune? I keep hearing about it being done this would really help with the truck swap combos!