GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2008 🢒 STS 🢒 Diagnostic Navigation 🢒 Vehicle Diagnostic Information 🢒 OnStar Schematics
Figure 1:

UE1
Object Number: 1903074 Size: FS
Master Electrical Component List
OnStar Description and Operation
Control Module References
VCIM, DLC
Figure 2:

VCIM, DLC
Object Number: 1903076 Size: FS
Master Electrical Component List
OnStar Description and Operation
Control Module References
UE1