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

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

  1. Question about GM.TRQENG pid

    Started by carlsonauto, May 22nd, 2012
    • Replies: 5
    • Views: 3,553
    May 22nd, 2012 Go to last post
  2. 4L80E Will NOT SHIFT WOT

    Started by Mike@Vengeance, April 26th, 2012
    • Replies: 3
    • Views: 3,769
    May 9th, 2012 Go to last post
  3. Transfer case ratios

    Started by MaxPF, May 4th, 2012
    • Replies: 0
    • Views: 2,197
    May 4th, 2012 Go to last post
  4. WOT downshift delay - any way to fix?

    Started by MaxPF, April 22nd, 2012
    • Replies: 1
    • Views: 2,520
    April 23rd, 2012 Go to last post
  5. how do I diagnose trans slipping

    Started by johnmaster, April 22nd, 2012
    • Replies: 2
    • Views: 2,359
    April 22nd, 2012 Go to last post
  6. 07 Built trans TCC locks when WOT (T42)

    Started by LS1FREEK, January 6th, 2012
    • Replies: 9
    • Views: 5,864
    April 17th, 2012 Go to last post
    • Replies: 7
    • Views: 5,139
    April 16th, 2012 Go to last post
  7. D6035?

    Started by JoshH, April 15th, 2012
    • Replies: 1
    • Views: 2,052
    April 16th, 2012 Go to last post
  8. 4L80E downshift firmness question

    Started by Wolfie, February 7th, 2012
    2 Pages
    1 2
    • Replies: 13
    • Views: 8,781
    April 9th, 2012 Go to last post
  9. 4l65e not shifting at wot

    Started by ls1mike, November 14th, 2011
    2 Pages
    1 2
    • Replies: 13
    • Views: 9,298
    April 4th, 2012 Go to last post
  10. 4L60E WOT shift 1>2

    Started by maudyZ28, April 1st, 2012
    • Replies: 5
    • Views: 6,721
    April 3rd, 2012 Go to last post
  11. Angry Help with 4l80 segment swap!!!

    Started by EVODRIFTER, March 28th, 2012
    • Replies: 2
    • Views: 4,856
    March 29th, 2012 Go to last post
    • Replies: 3
    • Views: 3,108
    March 15th, 2012 Go to last post
  12. 4L80E Tune Help Please!

    Started by EVODRIFTER, February 23rd, 2012
    • Replies: 0
    • Views: 3,158
    February 23rd, 2012 Go to last post
  13. 1st to 2nd shift slipping at WOT

    Started by Mayhem, February 12th, 2012
    • Replies: 5
    • Views: 5,004
    February 21st, 2012 Go to last post
  14. line pressure in efilive

    Started by Cool28, February 11th, 2012
    • Replies: 3
    • Views: 4,534
    February 12th, 2012 Go to last post
  15. switched modes??

    Started by truethinker, June 6th, 2007
    • Replies: 5
    • Views: 6,741
    January 16th, 2012 Go to last post
  16. 4L80E Shifting Soft and Slow (tune attached)

    Started by LastCall, December 26th, 2011
    2 Pages
    1 2
    • Replies: 18
    • Views: 15,560
    January 13th, 2012 Go to last post
  17. 8.1L PCM Controlling 1991 to 93 4L80E

    Started by 1BadAction, January 12th, 2012
    • Replies: 2
    • Views: 3,276
    January 12th, 2012 Go to last post
  18. T56 to 4L80e

    Started by Mike@Vengeance, January 9th, 2012
    • Replies: 3
    • Views: 4,024
    January 10th, 2012 Go to last post

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