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Forum: Allison 5 & 6 Speed

Allison 5 & 6 Speed Transmission for Duramax and 8.1L gas.

  1. Exclamation Sticky Thread Sticky: Allison 6spd TCM versions

    Started by GMPX, May 23rd, 2017
    • Replies: 1
    • Views: 3,881
    May 23rd, 2017 Go to last post
  1. Cool 600 rpm slip limit solved!!!! OS 25941752

    Started by mitchd, May 31st, 2013
    13 Pages
    1 2 3 ... 13
    • Replies: 127
    • Views: 42,374
    August 27th, 2019 Go to last post
  2. 5 to 6 speed conversion

    Started by 02CCSB, September 9th, 2012
    3 Pages
    1 2 3
    • Replies: 20
    • Views: 32,182
    April 5th, 2013 Go to last post
  3. converter will not lock under wot

    Started by camcojb, April 18th, 2009
    10 Pages
    1 2 3 ... 10
    • Replies: 99
    • Views: 26,876
    April 12th, 2011 Go to last post
  4. 2011+ TCM Full flashing

    Started by rcr1978, December 29th, 2014
    6 Pages
    1 2 3 ... 6
    • Replies: 57
    • Views: 19,746
    November 7th, 2015 Go to last post
  5. A40 Full Read option

    Started by GMPX, March 9th, 2015
    8 Pages
    1 2 3 ... 8
    • Replies: 72
    • Views: 17,954
    August 10th, 2018 Go to last post
  6. 2009 duramax tcm tuning

    Started by dgdyno, October 4th, 2009
    4 Pages
    1 2 3 ... 4
    • Replies: 36
    • Views: 17,467
    June 1st, 2010 Go to last post
  7. 6 Spd upshift torque reduction

    Started by HTMtrSprt, April 27th, 2013
    5 Pages
    1 2 3 ... 5
    • Replies: 46
    • Views: 14,671
    October 12th, 2013 Go to last post
  8. Allison TCM stand alone tuning

    Started by MaxPF, July 24th, 2010
    2 Pages
    1 2
    • Replies: 13
    • Views: 13,516
    August 1st, 2010 Go to last post
  9. 6 Speed Allison TCM's

    Started by Cougar281, January 11th, 2010
    2 Pages
    1 2
    • Replies: 11
    • Views: 12,529
    February 15th, 2011 Go to last post
  10. A50/T14 confusion

    Started by comnrailpwr, March 21st, 2017
    5 Pages
    1 2 3 ... 5
    • Replies: 47
    • Views: 12,343
    December 7th, 2017 Go to last post
  11. Help with TCM tuning on 2010 LMM code says doesnt support A50

    Started by darins28, April 6th, 2011
    3 Pages
    1 2 3
    • Replies: 23
    • Views: 11,849
    April 23rd, 2013 Go to last post
  12. A50 line pressure control

    Started by DURAtotheMAX, June 2nd, 2016
    3 Pages
    1 2 3
    • Replies: 28
    • Views: 11,115
    March 24th, 2017 Go to last post
  13. 2015.5+ Allison TCM

    Started by DURAtotheMAX, January 8th, 2015
    2 Pages
    1 2
    • Replies: 14
    • Views: 10,935
    February 12th, 2016 Go to last post
  14. TCC lockup again

    Started by DURAtotheMAX, October 23rd, 2009
    2 Pages
    1 2
    • Replies: 17
    • Views: 10,308
    April 23rd, 2011 Go to last post
  15. Adjusting Allison Shift Times

    Started by Sparky8370, June 24th, 2008
    3 Pages
    1 2 3
    • Replies: 22
    • Views: 10,134
    June 30th, 2008 Go to last post
  16. Need to hold 4th gear for dyno

    Started by samdweezel05, July 20th, 2008
    3 Pages
    1 2 3
    • Replies: 24
    • Views: 10,058
    July 1st, 2011 Go to last post
  17. 6 Speed Allison Tables

    Started by LBZRCKS, July 12th, 2008
    3 Pages
    1 2 3
    • Replies: 22
    • Views: 9,558
    January 27th, 2015 Go to last post
  18. how to tune allison tcm with efi

    Started by kingboydmax, May 2nd, 2009
    2 Pages
    1 2
    • Replies: 11
    • Views: 9,287
    February 1st, 2016 Go to last post
  19. Measuring Transmission Slip

    Started by BlkMax, June 22nd, 2009
    2 Pages
    1 2
    • Replies: 11
    • Views: 9,078
    December 18th, 2009 Go to last post
  20. my torque converter is a wimp

    Started by LB72004, August 28th, 2014
    3 Pages
    1 2 3
    • Replies: 28
    • Views: 7,471
    November 20th, 2014 Go to last post

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