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

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

  1. 2004 4l60e not shifting out of first.

    Started by bubba68ss, May 10th, 2017
    • Replies: 4
    • Views: 4,180
    joecar
    November 30th, 2017 Go to last post

  2. 2006 TBSS 4l80 Swap

    Started by Brad Brand, December 26th, 2012
    4l80 4l65 tbss 1 Attachment(s)
    • Replies: 5
    • Views: 4,588
    joecar
    December 27th, 2012 Go to last post

  3. 2006 TBSS Tire size and once in a blue moon shift issue

    Started by Jakes4321, October 22nd, 2008
    2 Attachment(s)
    • Replies: 0
    • Views: 2,245
    Jakes4321
    October 22nd, 2008 Go to last post

  4. 2007 6.0L 4L70E Avalanche TCM

    Started by ARK 99coupe, June 15th, 2007
    • Replies: 4
    • Views: 6,129
    GMPX
    June 29th, 2007 Go to last post

  5. Unhappy 2008 Silverado 2WD converted to 4 WD

    Started by GAMEOVER, January 30th, 2011
    • Replies: 8
    • Views: 17,205
    blacksilverado
    September 6th, 2011 Go to last post

  6. 2009 colorado 5.3 want to install a 4l80e

    Started by MECHAN12, December 19th, 2010
    2 Pages •
    1 2
    • Replies: 18
    • Views: 12,467
    Taz
    December 21st, 2010 Go to last post

  7. 2009 Silvy with 4L80E swap ... can someone look over the TCM file?

    Started by Mean Green Z28, May 5th, 2016
    3 Pages •
    1 2 3
    3 Attachment(s)
    • Replies: 20
    • Views: 12,826
    joecar
    March 9th, 2019 Go to last post

  8. 2012 T42 tcm 4l60e to 4l80e

    Started by bubba68ss, February 26th, 2019
    • Replies: 0
    • Views: 1,991
    bubba68ss
    February 26th, 2019 Go to last post

  9. 2400 stall do I need to tune?

    Started by ytry, July 11th, 2006
    • Replies: 0
    • Views: 3,172
    ytry
    July 11th, 2006 Go to last post

  10. 2600 to 3600 stall TQ

    Started by driver456, September 11th, 2006
    2 Attachment(s)
    • Replies: 9
    • Views: 6,987
    driver456
    September 13th, 2006 Go to last post

  11. 2nd and 4th only again

    Started by insane04, December 25th, 2007
    • Replies: 4
    • Views: 4,106
    insane04
    January 8th, 2008 Go to last post

  12. 3000 stall will not lock up

    Started by woody69, April 9th, 2007
    2 Pages •
    1 2
    • Replies: 10
    • Views: 7,753
    Round Rock TJ
    April 24th, 2007 Go to last post

  13. 3rd gear t/c lockup

    Started by whackem04, March 22nd, 2011
    2 Attachment(s)
    • Replies: 8
    • Views: 6,564
    Taz
    March 27th, 2011 Go to last post

  14. 3rd Gear TCC locking/unlocking issue

    Started by 1BadAction, August 20th, 2012
    2 Pages •
    1 2
    2 Attachment(s)
    • Replies: 19
    • Views: 11,963
    1BadAction
    August 31st, 2012 Go to last post

  15. 3rd to 2nd downshift trouble

    Started by kjohns18, November 6th, 2007
    2 Pages •
    1 2
    1 Attachment(s)
    • Replies: 16
    • Views: 9,894
    kjohns18
    November 11th, 2007 Go to last post

  16. 411 swap, now P0706 and P1810

    Started by Supercharged111, September 8th, 2014
    3 Pages •
    1 2 3
    5 Attachment(s)
    • Replies: 24
    • Views: 12,470
    Supercharged111
    September 18th, 2014 Go to last post

  17. 4L60 and shift kit

    Started by SRT10KLLR, April 21st, 2008
    4 Pages •
    1 2 3 ... 4
    2 Attachment(s)
    • Replies: 30
    • Views: 20,578
    VZThunder
    February 21st, 2013 Go to last post

  18. 4l60 bumpy shifts - slippage?

    Started by Boost, June 14th, 2010
    2 Pages •
    1 2
    • Replies: 16
    • Views: 26,600
    Boost
    June 20th, 2010 Go to last post

  19. 4l60 going bananas ! (maf sensor?)

    Started by Boost, March 13th, 2007
    2 Pages •
    1 2
    • Replies: 13
    • Views: 10,535
    Boost
    March 16th, 2007 Go to last post

  20. Question 4L60 Kickdown problem - TC??

    Started by Boost, November 26th, 2010
    • Replies: 5
    • Views: 6,549
    Boost
    November 27th, 2010 Go to last post
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