cgw,
The two 8.1/Allison bins I have are a different OS. I could be wrong, but I'm not sure this combination ever came with a 8.1L/Allison trans with 2156 OS for 2002 in a 512K meg 12200411 PCM.
cgw,
The two 8.1/Allison bins I have are a different OS. I could be wrong, but I'm not sure this combination ever came with a 8.1L/Allison trans with 2156 OS for 2002 in a 512K meg 12200411 PCM.
hey CGW, i have two 8.1 tunes, neither is stock and both have been switched from allison to 4l80e, hope this helps,
Last edited by 780ripper; 02-23-2021 at 01:49 AM.
Live like you're on vacation
Could you share the bins with the Allison trans?Originally Posted by 780ripper
Tunercat doesn't read the separate Allison TCM. That is why the TC .cals show as 4L80s.
I see
im new to ecm programming.
I have a 2004 GM ecm from an 8.1 with the Allison trans
i need to remove VATS and all smog related components.
I have the blue ECM connector with small power supply and Bluetooth OBDII
If you wouldn’t mind sharing your knowledge on how to remove
THE VATS As well as other smog related options.
A vehicle that we’re building.
I have an Apple phone and android phone as well as the laptop with windows so
I have plenty of options there .
I appreciate your help. Thank you so very much.
I'm probably not the best person to help with DIY programming as I mainly use commercial products like Tunercat and HP Tuners. There are others here more proficient with things like PCM Hammer. Do you have a cable that works with that? I also have that but rarely use it because like I said I have the other programmers. HP Tuners does read the Allison TCM when you use it.
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