Quote Originally Posted by NomakeWan View Post
Oh, you're right, 81 wasn't in the 90 definition. But I was more talking about the 92-93 CCM anyway. Interesting that in the older CCM, getting the 'wrong' bit on the reply would just make the CCM pretend like the ECM wasn't even there. Silly GM.
Haven't been getting email notifications again - and I'm completely lost here is C41 / C81 a dtc or ???

Anyway, I finally had some time to work on modding my logger so it will write all ALDL data to the sd card. That's now working so I should be able to capture the initial interaction between the PCM / CCM very easily with VATS enabled / disabled in the CCM, and with / without the correct PASSKey resistor. But now I'm remembering how rough my code example was where I left it. There's a lot of cleaning up, general stupidity mitigation, and function modularizing needing done. Ugh.