GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2005 🢒 STS 🢒 Vehicle Control Systems 🢒 Vehicle DTC Information 🢒 OnStar Schematics
Figure 1:

Power, Ground, VCIM, ISRVM
Object Number: 1372048 Size: FS
Master Electrical Component List
OnStar Description and Operation
Control Module References
DLC
Cellular Communication Schematic Icons
Cellular Communication Schematic Icons
Cellular Communication Schematic Icons
Fuse Block - Right Rear Bussing
Fuse Block Right Rear: Radio/Onstar, RT Turn Signal, Canister Vent and RF Heated /Vented Seat Fuses; Window Motors Circuit Breaker
G402 (1 of 2)
G402 (1 of 2)
G401 (1 of 2)
Figure 2:

VCIM, DLC
Object Number: 1372049 Size: FS
Master Electrical Component List
OnStar Description and Operation
Control Module References
Power, Ground, VCIM, ISRVM
GMLAN Low Speed 2 of 2
GMLAN High Speed - Domestic w/UE1,K59,F55
GMLAN High Speed - Domestic w/UE1,K59,F55
GMLAN High Speed - Domestic w/UE1,K59,F55