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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: 5,480
    May 23rd, 2017 Go to last post
  1. 5 to 6 speed conversion

    Started by 02CCSB, September 9th, 2012
    3 Pages
    1 2 3
    • Replies: 20
    • Views: 37,364
    April 5th, 2013 Go to last post
  2. A40 TCM Tuning

    Started by 08lmm72mm, May 2nd, 2020
    • Replies: 0
    • Views: 411
    May 2nd, 2020 Go to last post
  3. Help adding lockup in 2nd

    Started by 08Z71, January 12th, 2013
    • Replies: 8
    • Views: 3,611
    February 18th, 2013 Go to last post
  4. 2009 duramax tcm tuning release?

    Started by 09duramax, November 30th, 2011
    • Replies: 4
    • Views: 3,377
    January 3rd, 2012 Go to last post
  5. allison dvt

    Started by 1chevy02, March 10th, 2010
    • Replies: 6
    • Views: 3,603
    March 28th, 2010 Go to last post
  6. can't flash tcm

    Started by 1chevy02, December 11th, 2010
    2 Pages
    1 2
    • Replies: 13
    • Views: 4,946
    December 22nd, 2010 Go to last post
  7. 09 A50 TCM U0101 after full flash

    Started by 1fastws6, July 1st, 2015
    • Replies: 6
    • Views: 4,282
    January 13th, 2016 Go to last post
  8. Question Can not flash TCM in 2001 GMC LB7 excab 4x4 pickup?

    Started by 2001-GMC-LB7, June 13th, 2010
    2 Pages
    1 2
    • Replies: 13
    • Views: 6,404
    August 31st, 2010 Go to last post
  9. Down shift tune? for 06 6sp ehaust brake

    Started by 2wpuller, April 23rd, 2013
    • Replies: 1
    • Views: 1,520
    January 3rd, 2014 Go to last post
  10. 2004 AL5 May Be Corruped

    Started by 30 RUM, November 5th, 2015
    • Replies: 0
    • Views: 1,270
    November 5th, 2015 Go to last post
    • Replies: 7
    • Views: 3,469
    December 13th, 2013 Go to last post
    • Replies: 6
    • Views: 5,525
    May 23rd, 2009 Go to last post
    • Replies: 5
    • Views: 3,229
    May 28th, 2009 Go to last post
    • Replies: 2
    • Views: 1,242
    June 2nd, 2018 Go to last post
  11. Engine Brake Pattern for C4500?

    Started by 577cc, December 28th, 2009
    • Replies: 5
    • Views: 4,925
    January 2nd, 2010 Go to last post
    • Replies: 5
    • Views: 2,144
    June 13th, 2011 Go to last post
  12. calibration possably no good

    Started by 69camaro5speed, November 6th, 2008
    • Replies: 0
    • Views: 1,378
    November 6th, 2008 Go to last post
  13. failed flash

    Started by 69camaro5speed, November 9th, 2008
    • Replies: 8
    • Views: 3,413
    January 8th, 2009 Go to last post
  14. 2011 a50 issues

    Started by 913YFZr, March 1st, 2016
    • Replies: 1
    • Views: 1,759
    March 1st, 2016 Go to last post
  15. 6 speed taps reset problem

    Started by Acoombs, May 1st, 2008
    • Replies: 6
    • Views: 3,343
    May 2nd, 2008 Go to last post

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