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

Base Radio


Object Number: 1583417  Size: FS
Master Electrical Component List
Radio/Audio System Description and Operation
Control Module References
Uplevel Radio 1 of 2
BCM, DR LCK, ECM/TCM, INT LIGHT, PWR WNDW, RADIO, and SDM Fuses
DLC Power, Ground, and Low Speed LAN
Audio Output
G301, G102, G303, and G402
Figure 2:

Uplevel Radio 1 of 2


Object Number: 1583418  Size: FS
Master Electrical Component List
Radio/Audio System Description and Operation
Control Module References
Uplevel Radio 2 of 2
Base Radio
BCM, DR LCK, ECM/TCM, INT LIGHT, PWR WNDW, RADIO, and SDM Fuses
G301, G102, G303, and G402
G301, G102, G303, and G402
Figure 3:

Uplevel Radio 2 of 2


Object Number: 1583419  Size: FS
Master Electrical Component List
Radio/Audio System Description and Operation
Control Module References
Satellite Radio
Uplevel Radio 1 of 2
Figure 4:

Satellite Radio


Object Number: 1583420  Size: FS
Master Electrical Component List
Radio/Audio System Description and Operation
Control Module References
Redundant Steering Wheel Controls
Uplevel Radio 2 of 2
ABS 20A, ABS 30A, MIR, and S BAND ONSTAR Fuses
B+ Bus Bar - 2 of 2
DLC Power, Ground, and Low Speed LAN
G301, G102, G303, and G402
Figure 5:

Redundant Steering Wheel Controls


Object Number: 1735039  Size: FS
Master Electrical Component List
Radio/Audio System Description and Operation
Control Module References
Satellite Radio