Chris,
Try recording the CANBus again and make sure you ground both channels of the scope. May I suggest the following scope setting
5ms/div
2G sample per second (Max it Out)
Channel (A) CAN Hi 5volts DC coupled
Channel (B) CAN Lo 5volts DC coupled

What you recorded before looks like random noise.

It seems there are a lot of mysteries, myths, misunderstandings, smoke and mirrors, and just plain old misinformation out there regarding CAN Bus. I will share what little I know and muddy the waters even more. This is a high level overview and not a step by step guide. It assumes you are a master l...