GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2008 🢒 XLR 🢒 Power and Signal Distribution 🢒 Data Communications 🢒 OnStar Schematics
Figure 1:

Power, Ground, DLC, Antenna, and User Inputs
Object Number: 1899913 Size: FS
Master Electrical Component List
OnStar Description and Operation
Control Module References
Audio Output
BATT5, TILT/TELE SW/MEM SEAT MOD, ACCA/DRIV DR SW, IGN SW/INTR SENSR, ONSTAR, and PRK BRK SOLA Fuses
Power, Ground, and Class 2
G202
G202
G104, and G106
Figure 2:

Audio Output
Object Number: 1899917 Size: FS
Master Electrical Component List
OnStar Description and Operation
Control Module References
Power, Ground, DLC, Antenna, and User Inputs