GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2009 🢒 Yukon XL - 4WD 🢒 Power and Signal Distribution 🢒 Data Communications 🢒 Door Control Module Schematics
Figure 1:

Power, Ground, and Serial Data
Object Number: 2075253 Size: FS
Figure 2:

Outside Rearview Mirror References
Object Number: 2075255 Size: FS
Figure 3:

Door Lock, Window, and Lighting System References
Object Number: 2075257 Size: FS
Figure 4:

Heated Seat References
Object Number: 2075259 Size: FS