Page 1 of 3 123 LastLast
Results 1 to 10 of 21

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

  1. #1
    Senior Member
    Join Date
    May 2014
    Posts
    119

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

    Just need to make sure everything in there is good as it is. The only changes I've made are updating the gear ratios from 4L60E to 4L80E values and adjusting speedo tire revs/mile ... someone may have been in there in the past, just not sure if they did anything else. I can't seem to find any files to compare and the repository seems to be offline.

    Thanks in advance!
    Attached Files Attached Files

  2. #2
    Joe (Moderator) joecar's Avatar
    Join Date
    Apr 2003
    Posts
    27,779

    Default

    I'm look thru you file, I'll post back later today.

    Did you repin the harness...?

  3. #3
    Senior Member
    Join Date
    May 2014
    Posts
    119

    Default

    Quote Originally Posted by joecar View Post
    I'm look thru you file, I'll post back later today.

    Did you repin the harness...?
    Thanks

    Using a Frost adapter harness with the external PDNDL switch harness pinned in. Previous pwner only set it up with the neutral safety part of it jumped to stock harness, nothing worked through BMC and no-lockup. Now lock-up etc. and all the BCM features work after I added the PRNDL option. The early Frost harness didn't have the PRNDL connector on it since that was part of the vehicle harness and not internal to trans like in 2009

  4. #4
    Joe (Moderator) joecar's Avatar
    Join Date
    Apr 2003
    Posts
    27,779

    Default

    The Frost harness is for driving a 4L80E from a 4L80E segment, correct...?


    ( i.e. not the other harness which drives a 4L80E from a 4L60E segment )

  5. #5
    Senior Member
    Join Date
    May 2014
    Posts
    119

    Default

    Well, from talking to him, it didn't need anything but the harness and no segment swap was needed. How would I know that a segment swap is needed? Everything seems to work and shift correctly; although a little too firm.
    Is there a way to test two different files with/without?

  6. #6
    Senior Member
    Join Date
    May 2014
    Posts
    119

    Default

    This is what's used ... http://www.tunedbyfrost.com/products_dev1.htm

    with the following leg pinned in...

    Click image for larger version. 

Name:	IMG_20160219_104519 (2).jpg 
Views:	57 
Size:	973.4 KB 
ID:	19595

  7. #7
    Lifetime Member BLK02WS6's Avatar
    Join Date
    Jun 2005
    Posts
    442

    Default

    Joe - this is the same truck I have been working on - he is working on the transmission while I try to figure out the tune. It is controlled by a T42 controller - when you do a 4L80E swap on these, you don't swap segments do you? not sure how you could...
    GM EFI Tuner
    02 WS6 9.41 @ 143 MPH 3675#, drag radials, pump gas, through the mufflers - sold


  8. #8
    Senior Member
    Join Date
    May 2014
    Posts
    119

    Default

    So the only thing glaring I saw against another tune someone else uploaded here is the 1st gear wot setting from speed only (what was) to speed and rpm (what is now) ... it may be my imagination but with the gear ratios and this change that I just reflashed, truck behaves a bit better around town

    Sent from my SAMSUNG-SM-G900A using Tapatalk

  9. #9
    Joe (Moderator) joecar's Avatar
    Join Date
    Apr 2003
    Posts
    27,779

    Default

    Since this is a T42 (can't do segment swap) from a 4L60E, you have to use Frost's cable (which uses a relay to invert the 2-3 Shift signal and uses the TCC On/Off signal to drive the TCC).

  10. #10
    Joe (Moderator) joecar's Avatar
    Join Date
    Apr 2003
    Posts
    27,779

    Default

    I'm still going thru your tune.

    What rear axle gear ratio do you have...?

    What tire size...?

Page 1 of 3 123 LastLast

Similar Threads

  1. Need blackbox 4L80E tune for my 4L80E segment swap
    By Supercharged111 in forum 4speed RWD/FWD Transmission Tuning (incl T42)
    Replies: 52
    Last Post: September 10th, 2013, 09:57 AM
  2. 07.5-08 tcm in a 2009-10 LMM
    By IdahoRob in forum Allison 5 & 6 Speed
    Replies: 5
    Last Post: February 4th, 2011, 09:33 AM
  3. 2009 colorado 5.3 want to install a 4l80e
    By MECHAN12 in forum 4speed RWD/FWD Transmission Tuning (incl T42)
    Replies: 18
    Last Post: December 21st, 2010, 10:52 AM
  4. anyone have a 2009+ A50 TCM file??
    By DURAtotheMAX in forum Allison 5 & 6 Speed
    Replies: 9
    Last Post: August 20th, 2010, 11:51 AM
  5. 2009 duramax tcm tuning
    By dgdyno in forum Allison 5 & 6 Speed
    Replies: 36
    Last Post: June 1st, 2010, 02:56 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •