New user help with 2015 gm can decifering

Anybody have anything I can start with to get a feel on it?

DBC files?

1 thing I noticed I logged my car idling and put it thru playback and it racked like 400+ miles on it sitting still

1 Like

DBCs can be hard to come by. CAN messages are also specific to make/model/trim, what sort of car are you working with?

Also curious about that last bit. Did the odometer actually increase after you played back your idling traffic?

2015+ gm cars im working on

My odometer did increase after play back. I wont be doing that again. I did a short drive log and replayed it and it must of looped and repeated a lot really fast.

That’s pretty interesting. I don’t replay a lot of traffic into my car so I’ve not thought about that.

You might find some crowd-sourced DBCs via Comma-Cabana: https://github.com/commaai/openpilot/tree/devel/opendbc