GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2009 🢒 HHR 🢒 Power and Signal Distribution 🢒 Data Communications 🢒 Data Communication Schematics
Figure 1:

DLC Power, Ground, and Low Speed GMLAN
Object Number: 2085365 Size: FS
Master Electrical Component List
Data Link Communications Description and Operation
Control Module References
High Speed GMLAN
Figure 2:

High Speed GMLAN
Object Number: 2085367 Size: FS
Master Electrical Component List
Data Link Communications Description and Operation
Control Module References
DLC Power, Ground, and Low Speed GMLAN
DLC Power, Ground, and Low Speed GMLAN