GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 2008 🢒 Vibe - FWD 🢒 Driver Information and Entertainment 🢒 Cellular, Entertainment, and Navigation 🢒 OnStar Schematics
Figure 1:

Vehicle Communication Interface Module (VCIM), Power and Ground, Inside Rearview Mirror
Object Number: 1424554 Size: FS
Master Electrical Component List
OnStar Description and Operation
Control Module References
Vehicle Interface Unit (VIU) DLC
Air Pump, ETCS, Head, ALTS, EF1 Hazard EF2 Fuses
G100, G101, G102
G100, G101, G102
Figure 2:

Vehicle Interface Unit (VIU), Data Link Connector (DLC)
Object Number: 1847829 Size: FS
Master Electrical Component List
OnStar Description and Operation
Control Module References
Vehicle Interface Unit (VIU)
VCIM Power and Ground, Inside Rearview Mirror
Entertainment/Communication Schematic Icons
Air Pump, ETCS, Head, ALTS, EF1 Hazard EF2 Fuses
Air Pump, ETCS, Head, ALTS, EF1 Hazard EF2 Fuses
Fuel Injectors
Figure 3:

Vehicle Interface Unit (VIU)
Object Number: 1426731 Size: FS
Master Electrical Component List
OnStar Description and Operation
Control Module References
Vehicle Interface Unit (VIU) DLC
Entertainment/Communication Schematic Icons