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






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











Powertrain Expansion Bus