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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
    10 Attachment(s)
    • Replies: 20
    • Views: 48,784
    joecar
    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
    20 Attachment(s)
    • Replies: 153
    • Views: 197,619
    hsv084
    July 1st, 2022 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: 60,503
    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: 31,106
    auspeed
    December 11th, 2016 Go to last post

  1. T43 Acadia Transmission Tuning for TCC locking and Unlocking

    Started by ZigBlazer, March 28th, 2020
    2 Pages •
    1 2
    • Replies: 12
    • Views: 5,987
    ZigBlazer
    April 7th, 2020 Go to last post

  2. 6l8e logging

    Started by zbadestz, May 1st, 2011
    • Replies: 0
    • Views: 2,381
    zbadestz
    May 1st, 2011 Go to last post

  3. log files

    Started by zbadestz, April 20th, 2012
    • Replies: 0
    • Views: 9,757
    zbadestz
    April 20th, 2012 Go to last post

  4. 4l60 to 6l90 trans swap in 08 sierra, where to start?

    Started by zayne0, February 19th, 2020
    • Replies: 1
    • Views: 3,287
    Telco
    March 4th, 2020 Go to last post

  5. 06 Vette locked in 4th

    Started by Xman, October 30th, 2008
    3 Pages •
    1 2 3
    • Replies: 20
    • Views: 15,323
    gmh308
    December 9th, 2008 Go to last post

  6. Programming a T43 to work in an offroad buggy with 39" tires

    Started by whypave, April 22nd, 2010
    2 Pages •
    1 2
    2 Attachment(s)
    • Replies: 15
    • Views: 12,446
    whypave
    June 9th, 2010 Go to last post

  7. terminate can bus without an e38/ecm present

    Started by whypave, February 23rd, 2011
    2 Pages •
    1 2
    • Replies: 12
    • Views: 9,662
    whypave
    March 8th, 2011 Go to last post

  8. Looking for input on shift pressures

    Started by whypave, April 12th, 2011
    1 Attachment(s)
    • Replies: 2
    • Views: 3,314
    whypave
    September 8th, 2011 Go to last post

  9. Stock 2009 Corvette T43 .tun with the 24249179 os

    Started by whypave, August 23rd, 2011
    • Replies: 2
    • Views: 4,868
    joecar
    August 25th, 2011 Go to last post

  10. Circuit or method to tell 6l80 you are in a different ratio in tranfer case?

    Started by whypave, December 5th, 2011
    • Replies: 1
    • Views: 2,441
    slow67
    December 5th, 2011 Go to last post

  11. DTC and MIL Fault Processing tables not accessible in 2010 and up T43s

    Started by whypave, January 25th, 2012
    • Replies: 4
    • Views: 4,535
    GMPX
    January 26th, 2012 Go to last post

  12. 6l80 won't go into 6th gear above 75mph or so in tap shift mode

    Started by whypave, February 1st, 2012
    4 Attachment(s)
    • Replies: 4
    • Views: 6,189
    TBMSport
    February 10th, 2012 Go to last post

  13. Does a full reflash work on a new GM TCM?

    Started by whypave, July 16th, 2013
    • Replies: 1
    • Views: 2,976
    RetroAus
    September 15th, 2013 Go to last post

  14. Fuel tables different in auto mode versus tap shift with an e38/t43

    Started by whypave, May 4th, 2014
    2 Attachment(s)
    • Replies: 3
    • Views: 3,394
    whypave
    May 30th, 2014 Go to last post

  15. When the DVT will be available for T87 ?!

    Started by wesam, February 21st, 2016
    1 Attachment(s)
    • Replies: 6
    • Views: 6,083
    joecar
    November 4th, 2016 Go to last post

  16. Need help with 6L80E/T43 tune

    Started by Webbs, January 17th, 2009
    2 Attachment(s)
    • Replies: 1
    • Views: 5,054
    ChipsByAl
    January 17th, 2009 Go to last post

  17. TCC issuse after converter install on G8

    Started by Webbs, July 19th, 2009
    2 Pages •
    1 2
    • Replies: 10
    • Views: 11,830
    gmh308
    September 6th, 2009 Go to last post

  18. T43/E38 Scaled Shifting

    Started by Webbs, November 7th, 2012
    2 Pages •
    1 2
    2 Attachment(s)
    • Replies: 16
    • Views: 13,048
    mowton
    September 17th, 2015 Go to last post

  19. Odd 6L80E Behavoir

    Started by Webbs, January 29th, 2013
    2 Pages •
    1 2
    2 Attachment(s)
    • Replies: 10
    • Views: 7,741
    Webbs
    January 30th, 2013 Go to last post

  20. 6l80e help with TUTD holding gear

    Started by wallyman424, February 25th, 2024
    3 Pages •
    1 2 3
    4 Attachment(s)
    • Replies: 20
    • Views: 1,264
    Tre-Cool
    February 28th, 2024 Go to last post
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