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  1. NorthState

    1996-1997 Harness

    Found one today. Thx!
  2. NorthState

    1996-1997 Harness

    State: Eastern North Carolina Year: 1996-1997 Model: Sierra/ Silverado/ Tahoe?/ Suburban? WTB: 1996-1997 5.7 Vortec 4wd with 4l60e harness. Ugh… I need from the fuse block to PCM to BCM to trans to front differential. Anyone seen one walking around?
  3. NorthState

    LS swap with Blue/Green 2004 harness and 4 WD

    @L31MaxExpress ok so I have a 1997 5.7 harness. I went through the harness per Lt1swap pinout instructions. Removing the front transfer case wiring. I don’t think the blue green harness I got last week from the pull a part has the same transfer case sub harness as the red blue which corresponded...
  4. NorthState

    LS swap with Blue/Green 2004 harness and 4 WD

    @L31MaxExpress Your GMT400 had GMT800 hardware? This gets more confusing.
  5. NorthState

    LS swap with Blue/Green 2004 harness and 4 WD

    Yeah that’s what I’m afraid of. I hope o didn’t take the time to get a blue/ green which won’t correspond to my 5.7 equipment.
  6. NorthState

    LS swap with Blue/Green 2004 harness and 4 WD

    @L31MaxExpress, So the blue/ green connectors plugged right into the original front transfer case of the Sonora?
  7. NorthState

    LS swap with Blue/Green 2004 harness and 4 WD

    Cardinal rule of LS swaps. GET EVERYTHING! Get the harness, PCM, tach module, pedal if DBW that came with your motor. Get it all! I’m in the process of working through my first swap. Even with limited auto electrical experience, the concept should be doable. I ended up with a freshened up 5.3...
  8. NorthState

    lS Swap A/C Wiring Help Blue/Green PCM

    Been a long time, @Raulfelix24. Did you ever get an answer? I was thinking that the 5.7 harness could take everything except the AC request wire. I’m been working on swapping my 1997 for a few months, but I’ve just recently gotten a blue/green harness and PCM.
  9. NorthState

    GMC or Chevy Grille?

    I still need to change the bow tie airbag to the GMC one in mine!:doh2:
  10. NorthState

    LS PCM Mount in a TBI Truck?

    I’m working an LS swap on my 1997. I know that’s a slightly dif generation than your 88-94, but here’s some pics of how I got my 0411 to fit the factory 95-99 black box PCM. It may be that you could hit up a local pull-a-part to scavenge a 95-99 bracket. If you go this route, there is a lip...
  11. NorthState

    LS swap Coil Ground question

    I’m gonna go to a local pull-a-part btw Christmas and New Years with my multimeter to run some ohm tests on stock LS harnesses in the yard. I suppose it’s the only way to accurately determine where this ground goes.
  12. NorthState

    LS swap Coil Ground question

    Ok that’s good to know. I’m still learning as I go, so I need to find the correct pin to place it in the PCM. All I know at this point is that it definitely doesn’t go in Red#55.
  13. NorthState

    LS swap Coil Ground question

    Afternoon Gents! I hesitated posting this question so I could comb the interwebs for an answer. Stumped, here I am! I’m working through the LS swap on my 1997 ECSB. I traded my 355ci SCB for a rebuilt 5.3 with a reworked factory harness. It looks cleanly done, and even has a contact name and...
  14. NorthState

    0411 Pinout Contact for Lextech

    I got a pin out from him a couple months ago…
  15. NorthState

    94 Yukon 350 Idle issues and Loss of power.

    Not sure it solves the problem, but did y’all notice the injectors firing irregularly? Just an observation. Great video @AllStrobedUp! It’s always good to have supporting video to go along with a post!
  16. NorthState

    Anyone ever heard of LS tuning Specialist Dennis Diehl?

    Afternoon all! Looking for a guy who may be on here. To catch up on my story, check out my other posts, but to not belabor the point, I have switched from a SBC to a 5.3ls in my 1997 ECSB build. I traded my built 355ci for a rebuilt 5.3. It came with a reworked factory harness and an ECM with...
  17. NorthState

    95 350tbi won’t run right!

    Rock on @Noah1167! Glad it worked out!
  18. NorthState

    Erratic Tach only on Laptop

    Just an update: Since this went cold immediately after posting, I wanted to report findings for the archive so that if anyone had this question in the future they could reference my unfortunate conclusion. The 5.7 that my truck had from stock used the crank position sensor and or the cam...
  19. NorthState

    Name or part# for trim piece above Suburban taillights ??

    There’s a link to it on this thread, but @df2x4 says you’re better off painting them, if fading is the issue.
  20. NorthState

    Name or part# for trim piece above Suburban taillights ??

    https://www.gmt400.com/threads/1999-suburban-d-pillar-vent-cover-p-n.37832/
  21. NorthState

    What have you towed lately

    Towed my 97OBS to my buddy’s house to begin a heart transplant. The mechanical (non electric) motor didnt have crank or cam position sensors that the ECM was looking for. Therefore we couldn’t get a steady tach signal on HPtuners to adjust shift points. The motor simply did NOT want to integrate...
  22. NorthState

    Daily truck pics

    One day, she will drive as good as she looks!
  23. NorthState

    95 350tbi won’t run right!

    I assume the Throttle Position Sensor is in the correct position. Can’t they be adjusted? Could it possibly be out of calibration and be lying to the ECM? Just a thought.
  24. NorthState

    AC Delco Heavy Duty Performance Sway Bar End Links

    I think I put my lock nuts on the top like you said @Komet
  25. NorthState

    AC Delco Heavy Duty Performance Sway Bar End Links

    I definitely saw off the old ones when I have to change them! Not intending on saving them anyway. To put the new ones on, I use an 8-10” C-clamp to draw in the sway bar to the control arm. Be careful that it doesn’t slip. It may take a couple tries, but it will buy you enough space to get the...

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