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

Module Power, Ground and Serial Data References
Object Number: 2064960 Size: FS
Figure 2:

Power Moding and Interior Light References
Object Number: 2064962 Size: FS
Figure 3:

Exterior Light References
Object Number: 2064967 Size: FS
Figure 4:

Vehicle Access and Wiper References
Object Number: 2064970 Size: FS
Figure 5:

Brake, Horn, Transmission, Theft and Secondary/Configurable References
Object Number: 2064978 Size: FS