GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Saturn 🢒 2007 🢒 SKY 🢒 Diagnostic Navigation 🢒 Vehicle Diagnostic Information 🢒 Data Communication Schematics
Figure 1:

Low Speed LAN
Object Number: 1743040 Size: FS
Master Electrical Component List
Data Link Communications Description and Operation
Control Module References
High Speed LAN
Fuse Block-Underhood DLC, ECM, EXH, INJ IGN MDL, and TURBO Fuses, and PWR/TRN Relay
G300 - 1 of 2
G300 - 2 of 2
G300 - 1 of 2
Data Communication Schematic Icons
Figure 2:

High Speed LAN
Object Number: 1743046 Size: FS
Master Electrical Component List
Data Link Communications Description and Operation
Control Module References
Low Speed LAN
Data Communication Schematic Icons