I'll take it please..Yeah, it's the new Allison TCM used on their standalone type projects that are all J1939 based for communication.
Like to examine that J1939 version.
I'll take it please..Yeah, it's the new Allison TCM used on their standalone type projects that are all J1939 based for communication.
The caddilac song - One Piece at a TimeJonny Cash has a song about that
Technically speaking, you already have a truck... just keep the LLY and convert it for testing....If I keep receiving project related freebies at the current rate, estimate I will have a complete running truck by 2027..
Anybody have a good 10L90 case and clutches to go with this valve body and connectors?? Have enough to Frankenstein me a 16spd Allison, on the bench..
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But the owner of that LLY has rebuilt it from ground up while working at the GM dealer, one piece at a time.. I helped him bolt it together with the adapter kit...Technically speaking, you already have a truck... just keep the LLY and convert it for testing....
Well, that too.. The blue black and grey in the front left do line up with the E39A i have here too... But the grey one with no large pin has me stumped.Suppose to be T87 and something i forgot. So tossed it up because your guess is as good as mine.
Then I received an update as to fit. E×× Gasser.
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I was hoping some of those might fit the LLY. My Un-bricked ECM should be showing up here tomorrow, and forgot I needed to build a bench harness for the FUCM project. So if have any spares, I could sure use a set. Have stuff to trade..Well, that too.. The blue black and grey in the front left do line up with the E39A i have here too... But the grey one with no large pin has me stumped.
It was nice of GM to start using the same connectors across multiple modules lol.
Now where the heck did I put the connector I built for the E86?
The unknown grey connector may be from an E38.
The connector I used to bench read and flash the E86 came from an E39A most likely, since they're plentiful in local U-Wrench yards. Physically the same, just pinned different. I pretty much never see any diesel in any of the local U-Wrench yards... Last time I was out, I did see a pre-2000 or so power stroke or two, or what was left of them .. that was a first
I was hoping some of those might fit the LLY. My Un-bricked ECM should be showing up here tomorrow, and forgot I needed to build a bench harness for the FUCM project. So if have any spares, I could sure use a set. Have stuff to trade..
For this T87 project, the little VR conditioners look to be a SUCCESS !!
Literally just wired one up using 12v power, connected EFI to the TCM, and spun up the wheel of death. Bang, we got 2 good speed signals. Haven't even pulled out the scope yet. Next up, see how it runs on using the TCM 9v ref line for supply..
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How is the g-solenoid impedance issue being handled?I was hoping some of those might fit the LLY. My Un-bricked ECM should be showing up here tomorrow, and forgot I needed to build a bench harness for the FUCM project. So if have any spares, I could sure use a set. Have stuff to trade..
For this T87 project, the little VR conditioners look to be a SUCCESS !!
Literally just wired one up using 12v power, connected EFI to the TCM, and spun up the wheel of death. Bang, we got 2 good speed signals. Haven't even pulled out the scope yet. Next up, see how it runs on using the TCM 9v ref line for supply..
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Got my buddies LLY moving again last night, so can probably fit another one in now.Guess i gotta step it up and just drop off an entire truck...
That's what we gonna sort out next here on the old bench.. For the short term, just write out of the TCM OS. But for this build to be true 100% plug-N-play, we need to fake it electrically somehow. Besides hanging a coil in the harness, which I'm not above starting there, what you thinking??How is the g-solenoid impedance issue being handled?
There's not much going through my head lol. My thought is we may need to end up with a CAX file that can disable the solenoid and/or the diagnostic and DTC so it simply doesn't care, or an EFILive tune file that anyone can flash as part of the 'package'. The problem is the G Solenoid that's in the A40/A50/T14 trucks is the wrong impedance, which throws an incorrect impedance DTC, and when I added a resistor to bring the impedance into the proper range, I ended up with an incorrect current DTC . And then there is the heat - my GUESS is we'd need a fairly large resistor to not burn up (an eighth watt resistor would probably go POOF PDQ ), but even with beefy enough resistor, there'd likely be significant heat... It seems the best approach may be to kill it altogether. Right now, I have an old trim solenoid in my adapter harness to make it happy, but that's not a long term solution lol.Got my buddies LLY moving again last night, so can probably fit another one in now.
That's what we gonna sort out next here on the old bench.. For the short term, just write out of the TCM OS. But for this build to be true 100% plug-N-play, we need to fake it electrically somehow. Besides hanging a coil in the harness, which I'm not above starting there, what you thinking??
I have the data to write it out easy enough. Was just waiting on someone to sort out that CAX8 tread, then I'll dig up the location and we can whip one up for testing at least.
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