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Forum: 4speed RWD/FWD Transmission Tuning (incl T42)

4L60E, 4L80E, 4T60E etc transmission tuning, incl T42 TCM.

  1. No Lockup

    Started by max57, November 11th, 2019
    2 Pages •
    1 2
    3 Attachment(s)
    • Replies: 13
    • Views: 17,529
    joecar
    December 8th, 2019 Go to last post

  2. Quick TC question

    Started by InTruckDesign, November 4th, 2010
    • Replies: 4
    • Views: 17,367
    InTruckDesign
    November 4th, 2010 Go to last post

  3. Unhappy 2008 Silverado 2WD converted to 4 WD

    Started by GAMEOVER, January 30th, 2011
    • Replies: 8
    • Views: 17,262
    blacksilverado
    September 6th, 2011 Go to last post

  4. Exclamation Shifting harsh/soft with Speed Density (LS1 PCM)...?

    Started by joecar, May 11th, 2009
    2 Pages •
    1 2
    1 Attachment(s)
    • Replies: 10
    • Views: 16,247
    joecar
    May 29th, 2009 Go to last post

  5. TCC Lockup While Coasting

    Started by RonC, January 14th, 2007
    3 Pages •
    1 2 3
    1 Attachment(s)
    • Replies: 24
    • Views: 16,241
    Cablebandit
    March 28th, 2007 Go to last post

  6. Manual upshift downshift 1,2,3,4 on 4L60e without manual valve body

    Started by Test101, May 4th, 2012
    2 Pages •
    1 2
    1 Attachment(s)
    • Replies: 12
    • Views: 16,139
    joecar
    October 7th, 2013 Go to last post

  7. TCC Lockup Issue

    Started by DrX, December 15th, 2006
    3 Pages •
    1 2 3
    1 Attachment(s)
    • Replies: 21
    • Views: 16,099
    ScarabEpic22
    December 28th, 2006 Go to last post

  8. 4L80E 4rth Gear problem

    Started by almusafir, February 27th, 2007
    2 Pages •
    1 2
    1 Attachment(s)
    • Replies: 18
    • Views: 15,919
    joecar
    March 14th, 2007 Go to last post

  9. 4L80E Shifting Soft and Slow (tune attached)

    Started by LastCall, December 26th, 2011
    2 Pages •
    1 2
    5 Attachment(s)
    • Replies: 18
    • Views: 15,830
    Janke
    January 13th, 2012 Go to last post

  10. Desired Shift Times

    Started by ferocity02, April 3rd, 2014
    3 Pages •
    1 2 3
    1 Attachment(s)
    • Replies: 22
    • Views: 15,811
    ferocity02
    April 15th, 2014 Go to last post

  11. 4L60E Manual Mode Downshifting 3-2 & 2-1

    Started by TRANNYMAN, March 26th, 2008
    • Replies: 9
    • Views: 15,749
    joecar
    April 3rd, 2008 Go to last post

  12. 4L60E Stuck Connectors (Glue?)

    Started by mhburton, January 22nd, 2010
    2 Pages •
    1 2
    • Replies: 11
    • Views: 15,649
    vortecyota
    January 27th, 2010 Go to last post

  13. Torque Management reduction

    Started by Redline Motorsports, April 7th, 2007
    2 Pages •
    1 2
    • Replies: 16
    • Views: 15,534
    Rhino79
    June 30th, 2007 Go to last post

  14. Need help on 4L60E. Jerks at 25mph.

    Started by ocmdiaz714, September 30th, 2009
    4l60e, 5.7, automatic transmission, rebuild
    • Replies: 9
    • Views: 15,492
    ocmdiaz714
    November 2nd, 2009 Go to last post

  15. E38/T42 4l65E (no ISS) TCC fix???

    Started by vette5797, October 7th, 2010
    2 Pages •
    1 2
    3 Attachment(s)
    • Replies: 18
    • Views: 15,362
    vette5797
    June 5th, 2012 Go to last post

  16. TCC Slip when showing fully locked.

    Started by mhburton, February 11th, 2010
    2 Pages •
    1 2
    2 Attachment(s)
    • Replies: 11
    • Views: 15,243
    joecar
    February 28th, 2010 Go to last post

  17. 4l80e PI3800 triple disk chatter off idle

    Started by jay_rich, June 23rd, 2015
    3 Pages •
    1 2 3
    1 Attachment(s)
    • Replies: 27
    • Views: 15,092
    jay_rich
    August 4th, 2015 Go to last post

  18. 4L60E Tranny Temp

    Started by Rico, June 26th, 2006
    • Replies: 3
    • Views: 15,059
    Rico
    June 27th, 2006 Go to last post

  19. Locking converter in 2nd gear...

    Started by LS1_Dragster, September 9th, 2009
    2 Pages •
    1 2
    1 Attachment(s)
    • Replies: 18
    • Views: 15,026
    MyM8V8
    October 25th, 2009 Go to last post

  20. 4L85E TCC Tuning Help

    Started by jlane330, August 28th, 2016
    3 Pages •
    1 2 3
    10 Attachment(s)
    • Replies: 20
    • Views: 15,004
    joecar
    September 7th, 2016 Go to last post
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