GM Service Manual Online
For 1990-2009 cars only
Figure 1:

Power, Ground, and Video Signal


Object Number: 1810951  Size: FS
Master Electrical Component List
Video Entertainment System Description and Operation
Control Module References
Audio Signals
BATT 1, CNSTR VENT, CLSTR, HVAC BLWR, INFOTMNT, INT LAMP, ONSTAR, REAR DEFOG and RVC Fuses
BATT 1, CNSTR VENT, CLSTR, HVAC BLWR, INFOTMNT, INT LAMP, ONSTAR, REAR DEFOG and RVC Fuses
Radio w/U65 - 1 of 2
G201
Figure 2:

Audio Signals


Object Number: 1810953  Size: FS
Master Electrical Component List
Video Entertainment System Description and Operation
Control Module References
Power, Ground, and Video Signals
B+ BUS - 1 of 2
BATT 3, DR/LCK, REAR/WPR, RSE and S/ROOF Fuses and PWR WNDW Circuit Breaker
BATT 3, DR/LCK, REAR/WPR, RSE and S/ROOF Fuses and PWR WNDW Circuit Breaker
G201
G203, G205, G207