GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Isuzu 🢒 2008 🢒 I-290 🢒 Diagnostic Navigation 🢒 Vehicle Diagnostic Information 🢒 Data Communication Schematics
Figure 1:

Class 2 Serial Data
Object Number: 1907098 Size: FS
Master Electrical Component List
Data Link Communications Description and Operation
Control Module References
High Speed GMLAN Serial Data
Figure 2:

High Speed GMLAN Serial Data
Object Number: 1907292 Size: FS
Master Electrical Component List
Data Link Communications Description and Operation
Control Module References
Class 2 Serial Data