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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: 17,888
    May 23rd, 2017 Go to last post
    • Replies: 9
    • Views: 8,110
    March 27th, 2024 Go to last post
    • Replies: 0
    • Views: 807
    February 3rd, 2024 Go to last post
  1. Locking A40/A50 TCMs

    Started by vectorbundle, January 26th, 2024
    • Replies: 0
    • Views: 585
    January 26th, 2024 Go to last post
  2. EZLynk Locked T87 Controller

    Started by Woody35, March 3rd, 2023
    • Replies: 1
    • Views: 2,141
    September 6th, 2023 Go to last post
  3. Need help!

    Started by Jtrent93, May 28th, 2023
    • Replies: 0
    • Views: 1,816
    May 28th, 2023 Go to last post
  4. Allison Swap into Duramax Van

    Started by The Dark Side of Will, April 26th, 2023
    • Replies: 0
    • Views: 1,236
    April 26th, 2023 Go to last post
  5. A50 No Downshift Above 50 MPH

    Started by Lennydmaxguy, April 17th, 2023
    • Replies: 6
    • Views: 1,449
    April 24th, 2023 Go to last post
    • Replies: 0
    • Views: 818
    April 9th, 2023 Go to last post
  6. A50 garbled VIN

    Started by killerbee, February 2nd, 2023
    • Replies: 1
    • Views: 1,454
    February 8th, 2023 Go to last post
  7. A40 TCM Tuning

    Started by 08lmm72mm, May 2nd, 2020
    • Replies: 2
    • Views: 3,610
    February 2nd, 2023 Go to last post
    • Replies: 1
    • Views: 1,404
    January 15th, 2023 Go to last post
  8. Cool 600 rpm slip limit solved!!!! OS 25941752

    Started by mitchd, May 31st, 2013
    14 Pages
    1 2 3 ... 14
    • Replies: 137
    • Views: 99,923
    November 30th, 2022 Go to last post
  9. A50 replacement

    Started by derkscustomcars, November 1st, 2022
    • Replies: 2
    • Views: 1,825
    November 6th, 2022 Go to last post
  10. LLY/AL5 No Data Received Error

    Started by TorqueMonster007, August 23rd, 2022
    • Replies: 4
    • Views: 2,362
    September 1st, 2022 Go to last post
  11. Can I flash over a locked AL5

    Started by Moonlight, August 22nd, 2022
    • Replies: 1
    • Views: 1,511
    August 30th, 2022 Go to last post
    • Replies: 2
    • Views: 1,564
    August 5th, 2022 Go to last post
    • Replies: 0
    • Views: 1,320
    July 10th, 2022 Go to last post
  12. 5 to 6 speed conversion

    Started by 02CCSB, September 9th, 2012
    3 Pages
    1 2 3
    • Replies: 25
    • Views: 59,246
    March 23rd, 2022 Go to last post
  13. Locked a50 reflash

    Started by derkscustomcars, February 8th, 2022
    • Replies: 1
    • Views: 1,896
    February 15th, 2022 Go to last post
  14. 6 speed shift time question

    Started by pinstripebob, November 9th, 2021
    • Replies: 0
    • Views: 1,621
    November 9th, 2021 Go to last post

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