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Forum: 6 speed/8 speed RWD/FWD Transmission Tuning (incl T43, T76, T87)

6L80E, 6T40E, etc transmission tuning, incl T43 & T76 TCM. Not Allison.

  1. Sticky Thread Sticky: Improving shifts via the ECM

    Started by GMPX, March 11th, 2012
    16 Pages •
    1 2 3 ... 16
    20 Attachment(s)
    • Replies: 153
    • Views: 186,208
    hsv084
    July 1st, 2022 Go to last post

  2. Sticky Thread Sticky: 6L80 Reference Material

    Started by joecar, February 21st, 2014
    3 Pages •
    1 2 3
    10 Attachment(s)
    • Replies: 20
    • Views: 44,743
    joecar
    March 31st, 2021 Go to last post

  3. Sticky Thread Sticky: T43/E38 6L90 Shift points change

    Started by 55chevdelray, May 20th, 2013
    3 Pages •
    1 2 3
    6 Attachment(s)
    • Replies: 28
    • Views: 55,743
    joecar
    September 16th, 2020 Go to last post

  4. Sticky Thread Sticky: DIfferent T43 question, can't change OS?

    Started by 02CCSB, January 19th, 2016
    2 Pages •
    1 2
    • Replies: 14
    • Views: 28,744
    auspeed
    December 11th, 2016 Go to last post

  1. 6L80E T43 Link.ini

    Started by RC1, 2 Weeks Ago
    • Replies: 0
    • Views: 162
    RC1
    2 Weeks Ago Go to last post

  2. Weird shift flare T76

    Started by pinstripebob, July 3rd, 2023
    2 Attachment(s)
    • Replies: 2
    • Views: 1,275
    pinstripebob
    July 5th, 2023 Go to last post

  3. 2015-2019 HD 6l90e manual mode tuning

    Started by jakej03, June 10th, 2023
    • Replies: 3
    • Views: 1,161
    nonnieselman
    June 22nd, 2023 Go to last post

  4. ve ss reducing power

    Started by turbo, November 5th, 2022
    1 Attachment(s)
    • Replies: 3
    • Views: 2,510
    turbo
    November 14th, 2022 Go to last post

  5. 2800 stall converter 6L80e

    Started by turbo, October 28th, 2022
    1 Attachment(s)
    • Replies: 2
    • Views: 1,698
    turbo
    November 5th, 2022 Go to last post

  6. Please share any T43 24264923 OS

    Started by jakezed22, September 24th, 2022
    • Replies: 0
    • Views: 898
    jakezed22
    September 24th, 2022 Go to last post

  7. Unhappy 6th getting locked out at high speed!

    Started by trailermasher, April 18th, 2010
    5 Pages •
    1 2 3 ... 5
    6l80, lock out, speed, t43 16 Attachment(s)
    • Replies: 48
    • Views: 34,967
    Tre-Cool
    August 20th, 2022 Go to last post

  8. We really need T43 6L80e TCC pressure options!!

    Started by LS1FREEK, April 24th, 2021
    • Replies: 3
    • Views: 1,800
    Tre-Cool
    August 19th, 2022 Go to last post

  9. Torque Coefficent Table on E86B

    Started by jakezed22, July 6th, 2022
    • Replies: 0
    • Views: 839
    jakezed22
    July 6th, 2022 Go to last post

  10. 6l80E TECHM REPLACEMENT PROCESS

    Started by jmsmotorsport, January 14th, 2022
    • Replies: 8
    • Views: 3,036
    joecar
    January 27th, 2022 Go to last post

  11. Need some help with a T87

    Started by blackdog76, November 30th, 2021
    • Replies: 2
    • Views: 2,551
    blackdog76
    December 1st, 2021 Go to last post

  12. 6l80e tuning question

    Started by Veturius, November 14th, 2021
    4l60e, 6 speed, 6l80e, swap, trailblazer
    • Replies: 0
    • Views: 1,641
    Veturius
    November 14th, 2021 Go to last post

  13. 2017 T43 cal file

    Started by greasess, October 16th, 2021
    • Replies: 4
    • Views: 2,090
    joecar
    October 18th, 2021 Go to last post

  14. TCCSLIP clarification

    Started by PLohr, September 30th, 2021
    1 Attachment(s)
    • Replies: 1
    • Views: 1,602
    RC1
    October 5th, 2021 Go to last post

  15. Need to verify stock tune for new TCM

    Started by TorqueMonster007, September 3rd, 2021
    2 Attachment(s)
    • Replies: 2
    • Views: 2,060
    TorqueMonster007
    September 6th, 2021 Go to last post

  16. Understanding what OS needed for T43 to talk to ECM OS

    Started by jakezed22, September 3rd, 2021
    • Replies: 0
    • Views: 1,439
    jakezed22
    September 3rd, 2021 Go to last post

  17. 3.7 diff gears shift speeds

    Started by JCA, May 12th, 2021
    1 Attachment(s)
    • Replies: 0
    • Views: 2,014
    JCA
    May 12th, 2021 Go to last post

  18. T43 OS 24249179 2500HD 4WD Stock File Needed ASAP

    Started by gvmartin99@gmail.com, June 18th, 2020
    1 Attachment(s)
    • Replies: 3
    • Views: 3,783
    joecar
    April 29th, 2021 Go to last post

  19. Stock 6L90 tune needed

    Started by izaks, August 4th, 2017
    1 Attachment(s)
    • Replies: 5
    • Views: 3,397
    izaks
    April 25th, 2021 Go to last post

  20. T87 CAN Protocol for 8L90 control?

    Started by 1BadAction, March 1st, 2018
    2 Pages •
    1 2
    • Replies: 10
    • Views: 8,580
    Telco
    March 14th, 2021 Go to last post
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