I was able to load the generated global a dbc in cabana last night and it decodes several messages. I still only have ECM and VICM(HPCM2) on the bus. Not as many messages decoded as I hoped, the life of reverse engineering.

Started looking around for DBC definitions to decode GM Lan and found something crazy, I suspect other people here are already working with this.

https://github.com/commaai/openpilot

This project controls cars that have the super cruise type of systems(whatever other manufacturers call theirs ...

Well I went down what seems to be one dead end path, but it was good to learn. Purchased a usbjtag nt link thinking I could simply pull binaries from the ECM, VICM and PCM. Turns out that the ECM and PCM both have the MPC5676R which is well documented and easy to find the JTAG pins on the boards ...

Definitely good idea to snoop the GMLAN networks. I printed and highlighted the network diagram from the 2017 manual to help me get familiar. I did a bit of work this weekend, I'll write up some more detail this week.

Def appreciate any cheering. Small update:

Ordered the HpTuners MPVI3 to see what it will dump. I want it for my other ICE projects but maybe it will dump something sort of useful, maybe not.

Did a deeper dive on Kess V3, ECM Titanium, WinOLS and several other similar things for binary dumping ...

Excellent, I was hoping you would reply. I definitely appreciate the offer to help. I did find the 2017 service manual and have been getting familiar with the schematics and connector end views. Not sure how much I can help but let's find out. I'm having a bit of paralysis because I have 3 major ...

Hello, first post but this looks like the right place to be.

Some Background on this long and winding road to the Chevy forum on Openinverter.org:
11 years ago I wanted to build an EV conversion so I studied up for several months, purchased an RX8 and the canEV adapter plate. I made my full plan ...