Corvette CCM Reverse Engineering Anyone?

[-=Jeff=-]

NomakeWan,

I used your demo code you posted, I think it worked but not sure, however I was able to capture a bin from one of the 1992 CCMs. I have worked through about 5 PASSKey codes but no luck yet. Reason I say I am not sure the demo code worked for me is that my cluster was still showing a SYS on the LCD. but the BIN Dump is Legit. I just need to figure out the PASSKey.

I used the picture found in this thread showing how to connect the diode and resistor, which looked to be a 1K. so I think it was correct.

next plan is to add another Port and grab the RX to see the data. EDIT = this will use the 94-95 xdf. the 90-91 is different