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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: 3,889
    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: 42,387
    August 27th, 2019 Go to last post
  2. converter will not lock under wot

    Started by camcojb, April 18th, 2009
    10 Pages
    1 2 3 ... 10
    • Replies: 99
    • Views: 26,882
    April 12th, 2011 Go to last post
  3. A40 Full Read option

    Started by GMPX, March 9th, 2015
    8 Pages
    1 2 3 ... 8
    • Replies: 72
    • Views: 17,974
    August 10th, 2018 Go to last post
  4. 2011+ TCM Full flashing

    Started by rcr1978, December 29th, 2014
    6 Pages
    1 2 3 ... 6
    • Replies: 57
    • Views: 19,751
    November 7th, 2015 Go to last post
  5. A50/T14 confusion

    Started by comnrailpwr, March 21st, 2017
    5 Pages
    1 2 3 ... 5
    • Replies: 47
    • Views: 12,366
    December 7th, 2017 Go to last post
  6. 6 Spd upshift torque reduction

    Started by HTMtrSprt, April 27th, 2013
    5 Pages
    1 2 3 ... 5
    • Replies: 46
    • Views: 14,675
    October 12th, 2013 Go to last post
  7. 2009 duramax tcm tuning

    Started by dgdyno, October 4th, 2009
    4 Pages
    1 2 3 ... 4
    • Replies: 36
    • Views: 17,473
    June 1st, 2010 Go to last post
  8. my torque converter is a wimp

    Started by LB72004, August 28th, 2014
    3 Pages
    1 2 3
    • Replies: 28
    • Views: 7,474
    November 20th, 2014 Go to last post
  9. A50 line pressure control

    Started by DURAtotheMAX, June 2nd, 2016
    3 Pages
    1 2 3
    • Replies: 28
    • Views: 11,120
    March 24th, 2017 Go to last post
  10. A50 tuning

    Started by Dragbear, June 19th, 2014
    3 Pages
    1 2 3
    • Replies: 27
    • Views: 6,540
    November 7th, 2014 Go to last post
  11. Need to hold 4th gear for dyno

    Started by samdweezel05, July 20th, 2008
    3 Pages
    1 2 3
    • Replies: 24
    • Views: 10,061
    July 1st, 2011 Go to last post
  12. has anyone played with shift timing?

    Started by sledbert, September 17th, 2008
    3 Pages
    1 2 3
    • Replies: 23
    • Views: 6,069
    September 25th, 2008 Go to last post
  13. 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: 11,856
    April 23rd, 2013 Go to last post
  14. Adjusting Allison Shift Times

    Started by Sparky8370, June 24th, 2008
    3 Pages
    1 2 3
    • Replies: 22
    • Views: 10,138
    June 30th, 2008 Go to last post
  15. 6 Speed Allison Tables

    Started by LBZRCKS, July 12th, 2008
    3 Pages
    1 2 3
    • Replies: 22
    • Views: 9,563
    January 27th, 2015 Go to last post
  16. 06+ Allison DVT

    Started by Cougar281, April 14th, 2008
    3 Pages
    1 2 3
    • Replies: 20
    • Views: 6,850
    August 10th, 2008 Go to last post
  17. 5 to 6 speed conversion

    Started by 02CCSB, September 9th, 2012
    3 Pages
    1 2 3
    • Replies: 20
    • Views: 32,193
    April 5th, 2013 Go to last post
  18. A50 TCM Editing

    Started by S Phinney, December 12th, 2015
    3 Pages
    1 2 3
    • Replies: 20
    • Views: 7,074
    April 12th, 2016 Go to last post
  19. Allison VIN flashing

    Started by MaxPF, February 10th, 2011
    2 Pages
    1 2
    • Replies: 19
    • Views: 6,211
    January 11th, 2019 Go to last post
  20. allison 2000 cal

    Started by vectorbundle, January 2nd, 2014
    2 Pages
    1 2
    • Replies: 19
    • Views: 6,868
    March 11th, 2014 Go to last post

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