GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2008 🢒 Sierra - 4WD 🢒 Power and Signal Distribution 🢒 Data Communications 🢒 Body Control System Schematics
Figure 1:

Module Power, Ground and Serial Data References
Object Number: 1915427 Size: FS
Master Electrical Component List
Body Control System Description and Operation
Control Module References
Power Moding and Interior Light References
Figure 2:

Power Moding and Interior Light References
Object Number: 1915432 Size: FS
Master Electrical Component List
Body Control System Description and Operation
Control Module References
Exterior Light References
Module Power, Ground and Serial Data References
Figure 3:

Exterior Light References
Object Number: 1915491 Size: FS
Master Electrical Component List
Body Control System Description and Operation
Control Module References
Vehicle Access and Wiper References
Power Moding and Interior Light References
Figure 4:

Vehicle Access and Wiper References
Object Number: 1915493 Size: FS
Master Electrical Component List
Body Control System Description and Operation
Control Module References
Brake, Horn, Transmission, Theft and Secondary/Configurable References
Exterior Light References
Figure 5:

Brake, Horn, Transmission, Theft and Secondary/Configurable References
Object Number: 1915565 Size: FS
Master Electrical Component List
Body Control System Description and Operation
Control Module References
Vehicle Access and Wiper References