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  1. kidturbo

    LMM stand alone manual shift and high idle?

    I've done an Allison behind a duramax in a boat once, and without manual mode, it wasn't very happy. I can sell ya module to do it without a BCM, but looking at $500. While ya can do it with BCM from a Dmax truck, no programming is required, for less than $50 Sent from my SM-S901U using Tapatalk
  2. kidturbo

    T87 Swaps

    Ok that's what I needed. Are those early T87A's also locked up, can ya swap OS on any of those? Spent a few hours, more like eight actually, reviewing the 2018 messages structure against the T87A bin map data. Found a couple conflicting messages in the bin that didn't seem to line up with...
  3. kidturbo

    T87 Swaps

    Now just need a EBCM, and you'll be ready to drive off.. Quick question. What year did they switch from 87 to 87A in the Duramax builds? I've been analyzing CANbus captures I had on the laptop from a buddies 2018 L5P according the VIN. 2018 Chevrolet Silverado 2500HD 4WD Crew Cab 153.7" LTZ
  4. kidturbo

    T87 Swaps

    Yeah it's always been a question of mine because of the way K-line works, starting at 12v is very similar to what I've noted. Only know that haven't found a node that didn't work correctly if ya just power that wire along with 12v Key On.
  5. kidturbo

    LMM stand alone manual shift and high idle?

    Can be done a couple of different ways. The high idle control is easy with PTO module. However, the manual shift isn't without a BCM. Adding a BCM and shifting lever out of a truck would be the quickest and easiest by far. Sent from my SM-S901U using Tapatalk
  6. kidturbo

    T87 Swaps

    Exactly... Why I'm setting here sorting and eliminating CANbus ID's between the 16 E92 and 17 E40 data I have recorded from vehicles. I never had a call for anyone running the LML in a stand alone environment, so kinda skipped over those years. Have a couple dozen airboats out there running my...
  7. kidturbo

    T87 Swaps

    That sounds very promising. I'll give the old hack and flash a try again here shortly and let ya know. Playing with the GMLAN protocol almost daily for past decade, gives a good insight into it's progression. The gasser high speed GMLAN stuff started out with a just a handful of simple message...
  8. kidturbo

    T87 Swaps

    Yes I saved the 16 gasser before changing to the Allison. Will post it up on my FTP and IM you the link shortly. PS. Right after I crack this, thinking maybe I'll start a class action against GM... The whole OBDII regulation from 90's specifically states that all tools to perform updates must...
  9. kidturbo

    T87 Swaps

    Ok @Cougar281 got another good one for you to test, before ya get in trouble with the wife.. As this scientific study post probably won't do much good after the fact... LOL I attempted to clear these DTC's with a Full Flash of the same Allison OS. No luck, and some further reading shows these...
  10. kidturbo

    T87 Swaps

    I'm good with it. Not my wife.. [emoji848] Not having any luck with a 16 truck within an hour of me. So, plan B. Who has a 16 truck and a simple WIFI or Bluetooth OBD dongle. Take me a few to setup the commands again here, but one can capture canbus data using a simple ELM327 chip. All I need...
  11. kidturbo

    T87 Swaps

    Thanks guys those schematics should help. May have located a complete Allison 6spd valve body close that I can borrow for bit. Nobody beating the door down for a couple cores back setting at my buddies shop.. Since I have a couple full chassis harness laying around here, if this TCM gives any...
  12. kidturbo

    T87 Swaps

    15-16 be good for starters. Sent from my SM-S901U using Tapatalk
  13. kidturbo

    T87 Swaps

    Ok, so now it wants to play hardball with it's codes... The first new thing I discovered about these TCMs, they don't power down with key off.. Re-flashed a cal, and it didn't clear the DTC's upon boot. Figured it would at least take 30 seconds to set a permanent DTC after flashing. Yet the...
  14. kidturbo

    T87 Swaps

    Yeah.. We're about to see how permanent it is when I re-flash it's azz right outa this little aluminum box.. Funny thing, while it set same level for the missing valve body, and output speed sensor, it only sets a "Current" for the missing BCM and ABS nodes. Which I find pretty curious.
  15. kidturbo

    T87 Swaps

    Ok think I may have cracked it. Depending on which PC I have my V2 connected, I can get it to clear the U0100.. On the V8.2.24 version, it clears whenever I feed it 4 or 5 missing ID's similarly to the gasser setup was missing. However on my other PC, with V8.3.30, I can't get it to ever show...
  16. kidturbo

    T87 Swaps

    Pulled my trusty old E35B stand alone harness and ECM out of the tote last night. Got it wired up on the bench, along with our A50, and T87 TCM's. Needs to add couple more POTs to clear all the sensor codes. Then connect Crank/CAM emulator to get it spinning. But it's pretty happy so far...
  17. kidturbo

    T87 Swaps

    From my gasser version testing, the BCM and ABS are not required to make the TCM happy. I started out with a VIN all matching 16 ECM and BCM, but was able to drop all the BCM data. Yeah it sets a no BCM code, but TCM wasn't in a limp mode because if it. All that would be missing is Driver Mode...
  18. kidturbo

    T87 Swaps

    @Cougar281 Ya might also try matching up those VIN's just to eliminate that variable. I don't see the TCM spitting out a VIN #, but I know all the ECM's do. On the 87A gasser stuff I know that is a sticker, along with TCM wants to see a MAF signal or gets pissy I've read on other forums. There...
  19. kidturbo

    T87 Swaps

    Glad to hear you now own some Octopus too. They have been appearing on my desk every time I turn on the lights for the past month now.. Must be mating season... :p Spent all of last night working on the speed sensor converter problem. My first off the shelf solution, yielded less than stellar...
  20. kidturbo

    T87 Swaps

    Sweet. That certainly beats a saw and duct tape approach.. Now to get connecter angles lined up, and call that problem solved. So long as good inventory on the bracket. Getting closer to locating a local 15.5 model in the area. Will certainly check the oem layout. Sent from my SM-S901U using...
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