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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: 6L80 Reference Material

    Started by joecar, February 21st, 2014
    3 Pages
    1 2 3
    • Replies: 20
    • Views: 28,386
    March 31st, 2021 Go to last post
  2. Sticky Thread Sticky: Improving shifts via the ECM

    Started by GMPX, March 11th, 2012
    16 Pages
    1 2 3 ... 16
    • Replies: 152
    • Views: 132,805
    March 9th, 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
    • Replies: 28
    • Views: 35,884
    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: 19,400
    December 11th, 2016 Go to last post
  1. Need some help with a T87

    Started by blackdog76, 2 Days Ago
    • Replies: 2
    • Views: 72
    1 Day Ago Go to last post
  2. 6l80e tuning question

    Started by Veturius, 2 Weeks Ago
    4l60e, 6 speed, 6l80e, swap, trailblazer
    • Replies: 0
    • Views: 182
    2 Weeks Ago Go to last post
  3. 2017 T43 cal file

    Started by greasess, October 16th, 2021
    • Replies: 4
    • Views: 496
    October 18th, 2021 Go to last post
  4. TCCSLIP clarification

    Started by PLohr, September 30th, 2021
    • Replies: 1
    • Views: 430
    October 5th, 2021 Go to last post
  5. Need to verify stock tune for new TCM

    Started by TorqueMonster007, September 3rd, 2021
    • Replies: 2
    • Views: 585
    September 6th, 2021 Go to last post
    • Replies: 0
    • Views: 350
    September 3rd, 2021 Go to last post
  6. 3.7 diff gears shift speeds

    Started by JCA, May 12th, 2021
    • Replies: 0
    • Views: 1,026
    May 12th, 2021 Go to last post
    • Replies: 3
    • Views: 2,487
    April 29th, 2021 Go to last post
  7. Stock 6L90 tune needed

    Started by izaks, August 4th, 2017
    • Replies: 5
    • Views: 1,878
    April 25th, 2021 Go to last post
    • Replies: 0
    • Views: 456
    April 24th, 2021 Go to last post
  8. T87 CAN Protocol for 8L90 control?

    Started by 1BadAction, March 1st, 2018
    2 Pages
    1 2
    • Replies: 10
    • Views: 4,935
    March 14th, 2021 Go to last post
    • Replies: 6
    • Views: 868
    March 11th, 2021 Go to last post
  9. 6L90E shuddering when converter locked and under load

    Started by Jim_PA, January 21st, 2015
    2 Pages
    1 2
    • Replies: 15
    • Views: 6,945
    March 10th, 2021 Go to last post
    • Replies: 18
    • Views: 3,773
    March 10th, 2021 Go to last post
    • Replies: 0
    • Views: 829
    October 11th, 2020 Go to last post
  10. Need Stock Tune for T87 OS# 24281915

    Started by TorqueMonster007, August 10th, 2020
    • Replies: 1
    • Views: 1,037
    September 26th, 2020 Go to last post
  11. Unhappy 6th getting locked out at high speed!

    Started by trailermasher, April 18th, 2010
    5 Pages
    1 2 3 ... 5
    • Replies: 40
    • Views: 25,512
    September 16th, 2020 Go to last post
  12. TCC lockup for 6th only?

    Started by derkscustomcars, July 21st, 2020
    • Replies: 6
    • Views: 1,391
    September 2nd, 2020 Go to last post
    • Replies: 27
    • Views: 4,347
    August 31st, 2020 Go to last post
  13. Question on Full Flashing T87

    Started by TorqueMonster007, August 11th, 2020
    • Replies: 1
    • Views: 840
    August 12th, 2020 Go to last post

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