Originally Posted by
DURAtotheMAX
Flexible-Data rate CAN. Works at speeds >1mbps, and up to 64-byte(!) message. Its the new encrypted CAN/GMLAN bus that GM will be moving over to within the next couple of years when they roll out the new Global-B electrical architecture to replace the current Global-A.
I suspect OBD tuning will basically end when they go to encrypted CAN. 5 byte seed/key stored in the cloud. :(
I dont blame them for going to encryped CAN though; Global-B will support over-the-air software updates and wireless diagnostics, so security pretty much HAS to be implemented on the bus to protect us from cyber attacks, etc.