GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2007 🢒 CTS 🢒 Engine 🢒 Engine Controls and Fuel - 3.6L 🢒 Data Communication Schematics
Figure 1:

Power, Ground, and GMLAN Bus
Object Number: 1788452 Size: FS
Master Electrical Component List
Data Link Communications Description and Operation
Control Module References
Class 2 Serial Data Bus - LHD (1 of 2)
Underhood Fuse Block DIM/ALDL, Volt Check, Flasher, CCP, ECM/TCM, and ABS Fuses
Underhood Fuse Block DIM/ALDL, Volt Check, Flasher, CCP, ECM/TCM, and ABS Fuses
G200
G200
Computer/Integrating Systems Schematic Icons
Computer/Integrating Systems Schematic Icons
Computer/Integrating Systems Schematic Icons
Figure 2:

Class 2 Serial Data Bus - LHD - 1 of 2
Object Number: 1788463 Size: FS
Master Electrical Component List
Data Link Communications Description and Operation
Control Module References
Class 2 Serial Data Bus - LHD (2 of 2)
Power, Ground, GMLAN BUS
Class 2 Serial Data Bus - LHD (2 of 2)
Class 2 Serial Data Bus - LHD (2 of 2)
Figure 3:

Class 2 Serial Data Bus - LHD - 2 of 2
Object Number: 1788467 Size: FS
Master Electrical Component List
Data Link Communications Description and Operation
Control Module References
Class 2 (1 of 2) Serial Data Bus - RHD
Class 2 Serial Data Bus - LHD (1 of 2)
Class 2 Serial Data Bus - LHD (1 of 2)
Class 2 Serial Data Bus - LHD (1 of 2)
Computer/Integrating Systems Schematic Icons
Figure 4:

Class 2 Serial Data Bus - RHD - 1 of 2
Object Number: 1788470 Size: FS
Master Electrical Component List
Data Link Communications Description and Operation
Control Module References
Class 2 (2 of 2 - RHD)
Class 2 Serial Data Bus - LHD (2 of 2)
Class 2 (2 of 2 - RHD)
Class 2 (2 of 2 - RHD)
Figure 5:

Class 2 Serial Data Bus - RHD - 2 of 2
Object Number: 1788479 Size: FS
Master Electrical Component List
Data Link Communications Description and Operation
Control Module References
Class 2 (1 of 2) Serial Data Bus - RHD
Class 2 (1 of 2) Serial Data Bus - RHD
Computer/Integrating Systems Schematic Icons