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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. 24239353 OS from a Pickup Needed

    Started by 02CCSB, October 5th, 2017
    • Replies: 1
    • Views: 2,639
    gvmartin99@gmail.com
    June 18th, 2020 Go to last post

  2. 24249042 - T43 Acadia File Needed

    Started by 02CCSB, January 19th, 2016
    • Replies: 0
    • Views: 2,757
    02CCSB
    January 19th, 2016 Go to last post

  3. 2800 stall converter 6L80e

    Started by turbo, October 28th, 2022
    1 Attachment(s)
    • Replies: 2
    • Views: 2,075
    turbo
    November 5th, 2022 Go to last post

  4. 3.7 diff gears shift speeds

    Started by JCA, May 12th, 2021
    1 Attachment(s)
    • Replies: 0
    • Views: 2,279
    JCA
    May 12th, 2021 Go to last post

  5. 4l60 to 6l90 trans swap in 08 sierra, where to start?

    Started by zayne0, February 19th, 2020
    • Replies: 1
    • Views: 3,378
    Telco
    March 4th, 2020 Go to last post

  6. 4l80e to six speed (cda009)

    Started by Joemmahaffey1, April 1st, 2020
    2 Pages •
    1 2
    1 Attachment(s)
    • Replies: 17
    • Views: 7,839
    Joemmahaffey1
    April 29th, 2020 Go to last post

  7. 6.2 ctsv lsa swap transmission problem

    Started by garciam8914, November 27th, 2017
    • Replies: 0
    • Views: 2,048
    garciam8914
    November 27th, 2017 Go to last post

  8. 6l80 final drive ration, gearing, and tire change help

    Started by jrad12381, July 23rd, 2016
    2 Attachment(s)
    • Replies: 8
    • Views: 6,143
    jrad12381
    July 24th, 2016 Go to last post

  9. 6l80 help!

    Started by bensalz1911, October 28th, 2018
    • Replies: 2
    • Views: 2,721
    Telco
    February 19th, 2019 Go to last post

  10. Unhappy 6l80 op24254909

    Started by tokymon, May 5th, 2011
    1 Attachment(s)
    • Replies: 9
    • Views: 5,741
    tokymon
    May 8th, 2011 Go to last post

  11. 6L80 prevent wot 2 to 1 downshift

    Started by cmpy23, January 29th, 2013
    • Replies: 0
    • Views: 2,306
    cmpy23
    January 29th, 2013 Go to last post

  12. 6l80 Tap Shift

    Started by koryenger, June 26th, 2017
    6l80 tap shift t43 2 Attachment(s)
    • Replies: 4
    • Views: 9,890
    RuraBrute
    February 10th, 2018 Go to last post

  13. 6L80 TM removal?

    Started by SRT10KLLR, October 10th, 2009
    17 Pages •
    1 2 3 ... 17
    11 Attachment(s)
    • Replies: 167
    • Views: 122,842
    restless@westnet.com.au
    October 23rd, 2012 Go to last post

  14. 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: 6,245
    TBMSport
    February 10th, 2012 Go to last post

  15. 6L80/90e's How they work

    Started by MN C5, June 11th, 2008
    5 Pages •
    1 2 3 ... 5
    1 Attachment(s)
    • Replies: 49
    • Views: 42,554
    PSWired
    December 26th, 2008 Go to last post

  16. 6L80E and 4WD Low range on drivetrain swaps

    Started by 400ss, May 4th, 2014
    2 Attachment(s)
    • Replies: 2
    • Views: 4,390
    400ss
    August 17th, 2014 Go to last post

  17. 6l80e code p01825

    Started by JCA, October 19th, 2017
    • Replies: 2
    • Views: 2,451
    JCA
    October 20th, 2017 Go to last post

  18. 6l80e E38 no vehicle speed

    Started by KillaKustomKables, June 28th, 2012
    • Replies: 2
    • Views: 4,612
    gmh308
    February 12th, 2013 Go to last post

  19. 6l80e help with TUTD holding gear

    Started by wallyman424, February 25th, 2024
    3 Pages •
    1 2 3
    4 Attachment(s)
    • Replies: 20
    • Views: 1,508
    Tre-Cool
    February 28th, 2024 Go to last post

  20. 6L80E Pids and logging...

    Started by Longslyde, June 20th, 2011
    2 Pages •
    1 2
    1 Attachment(s)
    • Replies: 14
    • Views: 13,555
    Tre-Cool
    August 25th, 2011 Go to last post
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