Operation CHARM: Car repair manuals for everyone.

Information Bus




Data Communication Schematics

Low Speed GMLAN (1 of 2)





Low Speed GMLAN (2 of 2)





High Speed GMLAN (1 of 2)





High Speed GMLAN (2 of 2)





Enable Serial Data





BCM Local Interconnect Network (LIN) Bus 1, 2, 3, 4 and Memory Seat LIN Bus





Radio/HVAC Local Interconnect Network (LIN) Bus and CAN Graphical Interface





Chassis Expansion Bus