Page 1 of 6 123 ... LastLast
Results 1 to 10 of 58

Thread: 0411 conversion issue

  1. #1
    Junior Member
    Join Date
    Dec 2007
    Posts
    11

    Default 0411 conversion issue

    I updated my 99Tahoe 4x4 with a 0411 PCM and am using a calibration from a 02 Express Van OS: 12212156

    Everything is running great except when I place the truck in 4lo. When I do that it does not want to shift to any gear. It pretty much stays in 1st gear and will hit redline! If I put it in 4HI it works normally.

    I have verified all my connections are correct and have been reading on a few forums of a few people having this problem. There is nothing really in the current tune which even references 4LO.
    Any help to get this working would be greatly appreciated. If you need to check out my current tune let me know and I will attach it later today.

    Thanks

    Mark

  2. #2
    Senior Member
    Join Date
    Jan 2007
    Posts
    185

    Default

    I am going to try this again tonight, I built a jumper a liong time ago to try a 411 without repinning and I thought I had everything working. I didnt want to re-pin because I ended up using my 411 for another project and my other truck is stock anyway. I picked up another 411 today and am going to try it again.I think a trans segment swap should fix it?

  3. #3
    Junior Member
    Join Date
    Dec 2007
    Posts
    11

    Default

    I tried a trans segment swap from a 02 s10 with the same OS number.. didnt work.
    When I did the swap I just copied the transmission segment.

    I even tried a full reflash the entire 411 with a tune from a 4.3 (ran like poo but it still wouldnt shift while in 4LO). Still dont work. I know the pin is in the right spot Red connector pin 16. I tried to put it in 4LO and ground that pin(put a permanent ground on it)
    still didnt work.

    I have been looking around to make sure the 4LO pin is in the right spot but I found any data for the 411 pin inputs yet(except for the one lextech made up.)

  4. #4
    Senior Member
    Join Date
    Jan 2007
    Posts
    185

    Default

    well, I was sure i had it working, but I must not have. I also tried a trans segment swap and it didnt work. I also started with a 2002 silvy file and copied only the engine segment from a van over and that made it not start. I think it might be in the system part of the file or something.

  5. #5
    Senior Member
    Join Date
    Jan 2007
    Posts
    185

    Default

    Quote Originally Posted by makoskey View Post
    I tried a trans segment swap from a 02 s10 with the same OS number.. didnt work.
    When I did the swap I just copied the transmission segment.

    I even tried a full reflash the entire 411 with a tune from a 4.3 (ran like poo but it still wouldnt shift while in 4LO). Still dont work. I know the pin is in the right spot Red connector pin 16. I tried to put it in 4LO and ground that pin(put a permanent ground on it)
    still didnt work.

    I have been looking around to make sure the 4LO pin is in the right spot but I found any data for the 411 pin inputs yet(except for the one lextech made up.)

    was your 4.3 tune from a 4x4 s10?

  6. #6
    Junior Member
    Join Date
    Dec 2007
    Posts
    11

    Default

    I wasn't sure. It just said S10. I tried 3 different ones though to be safe. 1 from a s10, blazer and the 3rd which you did silverado.

    I tried emailing Justin at BlackBear but haven't heard anything back yet. Was hoping maybe he had an idea. I would really like to get this fixed!

    I wonder if I can put that pin to another input that uses performance mode? I can just use the tables for performance portion when it goes to 4LO.

    Part of the problem is like you said the OS. There isn't any other OS we can put into the 411 for a 5.7 vortec 4x4 with 4LO trigger..bummer
    Last edited by makoskey; April 29th, 2008 at 08:25 AM.

  7. #7
    Senior Member
    Join Date
    Jan 2007
    Posts
    185

    Default

    wel, I had my 411 programmed with a tech II with a 2002 ZR2 vin and calibration then read it out then copied engine cal,diag and fuel system and it works. I have a 98 pushbutton 4x4 and this file works I just tried it about 10 minutes ago, it shifts in 4 lo under part throttle and it will even shift in to 4th when going fast enough. I dont know where else to post this file, but I know there are many people that need it.
    Attached Files Attached Files

  8. #8
    Senior Member
    Join Date
    Jan 2007
    Posts
    185

    Default

    make sure that c2 pin 16 has ground when in 4 lo, I double checked this on mine and it works.

  9. #9
    Junior Member
    Join Date
    Dec 2007
    Posts
    11

    Default

    Quote Originally Posted by s10mods View Post
    make sure that c2 pin 16 has ground when in 4 lo, I double checked this on mine and it works.

    s10mods..thank you so much. It works. If you are ever in SiouxFalls, SD look me up..I owe you a few beers!!!

  10. #10
    Senior Member
    Join Date
    Jan 2007
    Posts
    185

    Default

    cool, thanks I dont know if I will get out that way but if I ever am, i'll take you up on that offer.

Page 1 of 6 123 ... LastLast

Similar Threads

  1. 0411 controlling the fans issue...
    By LS1_Dragster in forum Gen III V8 Specific
    Replies: 1
    Last Post: June 9th, 2010, 05:50 AM
  2. 1996 7.4 with 0411 PCM
    By GAMEOVER in forum Vortec V6/V8 Specific
    Replies: 2
    Last Post: June 5th, 2010, 12:22 PM
  3. Need Help 0411 PCM
    By rsicard in forum General (Petrol, Gas, Ethanol)
    Replies: 3
    Last Post: February 19th, 2010, 08:00 AM
  4. 96 to 01 '0411 conversion; S10 4.3 newb ?
    By overS10ded in forum Vortec V6/V8 Specific
    Replies: 21
    Last Post: November 20th, 2009, 03:43 AM
  5. LBZ conversion issue?? Reduced Engine power??
    By heathgu in forum Duramax 06 LLY / 06+ LBZ & LMM
    Replies: 5
    Last Post: October 14th, 2007, 11:17 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
  •