GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 2008 🢒 G6 🢒 Power and Signal Distribution 🢒 Data Communications 🢒 OnStar Schematics
Figure 1:

Onstar (Coupe/Sedan)
Object Number: 1913255 Size: FS
Master Electrical Component List
OnStar Description and Operation
Control Module References
OnStar - Convertible
Figure 2:

Onstar (Convertible)
Object Number: 1913257 Size: FS
Master Electrical Component List
OnStar Description and Operation
Control Module References
OnStar - Coupe/Sedan