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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
    2 Pages
    1 2
    • Replies: 15
    • Views: 16,721
    July 9th, 2018 Go to last post
  2. Sticky Thread Sticky: DIfferent T43 question, can't change OS?

    Started by 02CCSB, January 19th, 2016
    2 Pages
    1 2
    • Replies: 14
    • Views: 12,134
    December 11th, 2016 Go to last post
  3. Sticky Thread Sticky: Improving shifts via the ECM

    Started by GMPX, March 11th, 2012
    15 Pages
    1 2 3 ... 15
    • Replies: 147
    • Views: 89,622
    July 25th, 2016 Go to last post
  4. Sticky Thread Sticky: T43/E38 6L90 Shift points change

    Started by 55chevdelray, May 20th, 2013
    3 Pages
    1 2 3
    • Replies: 21
    • Views: 23,028
    October 8th, 2015 Go to last post
  1. 8L90 shift/shudder problems

    Started by Telco, 1 Day Ago
    • Replies: 0
    • Views: 98
    1 Day Ago Go to last post
    • Replies: 9
    • Views: 177
    1 Day Ago Go to last post
    • Replies: 9
    • Views: 193
    3 Days Ago Go to last post
    • Replies: 3
    • Views: 95
    1 Week Ago Go to last post
    • Replies: 1
    • Views: 595
    4 Weeks Ago Go to last post
  2. 6L80E tuning question

    Started by ToonerSQUAD89, February 27th, 2019
    2 Pages
    1 2
    • Replies: 11
    • Views: 2,098
    January 26th, 2020 Go to last post
  3. Full Flash Locked T43 TCM

    Started by GreenColorado, January 21st, 2020
    read tcm issue, t43, tcm
    • Replies: 1
    • Views: 252
    January 23rd, 2020 Go to last post
  4. Ive got P0700 amd P182E problems

    Started by Hooter, December 7th, 2019
    • Replies: 2
    • Views: 584
    December 20th, 2019 Go to last post
  5. Exclamation VIN Change Not Updating

    Started by TBMSport, November 26th, 2019
    2 Pages
    1 2
    • Replies: 11
    • Views: 929
    November 28th, 2019 Go to last post
  6. Need T87 stock files pretty bad.

    Started by 07blueCR, September 26th, 2019
    • Replies: 3
    • Views: 1,445
    September 26th, 2019 Go to last post
  7. Need a stock 2010 Express van T43 OS 24254909

    Started by cynight, August 20th, 2019
    • Replies: 1
    • Views: 703
    September 20th, 2019 Go to last post
  8. Unhappy 6th getting locked out at high speed!

    Started by trailermasher, April 18th, 2010
    4 Pages
    1 2 3 ... 4
    • Replies: 37
    • Views: 18,337
    September 15th, 2019 Go to last post
    • Replies: 1
    • Views: 6,172
    September 10th, 2019 Go to last post
  9. T87 Cant Full flash change OS

    Started by duramaximizer, August 15th, 2019
    • Replies: 1
    • Views: 364
    August 15th, 2019 Go to last post
  10. 8 Speed T87 compatibility

    Started by LS-SWAPPER, October 2nd, 2018
    • Replies: 9
    • Views: 1,904
    July 24th, 2019 Go to last post
    • Replies: 6
    • Views: 2,396
    July 20th, 2019 Go to last post
    • Replies: 5
    • Views: 2,100
    June 16th, 2019 Go to last post
    • Replies: 9
    • Views: 3,536
    June 9th, 2019 Go to last post
  11. 8l90e tutd

    Started by Brads_rs, February 1st, 2019
    • Replies: 3
    • Views: 1,038
    March 18th, 2019 Go to last post
  12. Exclamation Engine Reduced Power Help!

    Started by TorqueMonster007, December 8th, 2016
    • Replies: 1
    • Views: 1,376
    February 19th, 2019 Go to last post

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