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

Power, Ground, Front Speakers, Antenna and References


Object Number: 1787451  Size: FS
Master Electrical Component List
Radio/Audio System Description and Operation
Control Module References
Rear Speakers w/o UK6, U32 or U2K
Underhood Fuse Block IBCM 1, Body Control Module (BCM) AIRBAG (BATT), CLUSTER/THEFT, HVAC CTRL (BATT), IGN SENSOR and RADIO Fuses
Low Speed Serial Data
OnStar Schematics
G201
Entertainment/Communication Schematic Icons
Entertainment/Communication Schematic Icons
Entertainment/Communication Schematic Icons
Entertainment/Communication Schematic Icons
Figure 2:

Rear Speakers w/o UK6, U32 or U2K


Object Number: 1787457  Size: FS
Master Electrical Component List
Radio/Audio System Description and Operation
Control Module References
Rear Seat Audio (RSA) Controller
Power, Ground, Front Speakers, Antenna and References
Entertainment/Communication Schematic Icons
Entertainment/Communication Schematic Icons
Entertainment/Communication Schematic Icons
Entertainment/Communication Schematic Icons
Figure 3:

Rear Seat Audio (RSA) Controller


Object Number: 1787460  Size: FS
Master Electrical Component List
Radio/Audio System Description and Operation
Control Module References
DVD Player and Digital Radio Receiver
Rear Speakers w/o UK6, U32 or U2K
Entertainment/Communication Schematic Icons
Entertainment/Communication Schematic Icons
Entertainment/Communication Schematic Icons
Entertainment/Communication Schematic Icons
Entertainment/Communication Schematic Icons
Entertainment/Communication Schematic Icons
Entertainment/Communication Schematic Icons
Entertainment/Communication Schematic Icons
Entertainment/Communication Schematic Icons
Entertainment/Communication Schematic Icons
Displays
Backup Lamps and License Lamps
G304 and G305
Figure 4:

DVD Player and Digital Radio Receiver


Object Number: 1787461  Size: FS
Master Electrical Component List
Radio/Audio System Description and Operation
Control Module References
Rear Seat Audio (RSA) Controller
Entertainment/Communication Schematic Icons
Entertainment/Communication Schematic Icons
Entertainment/Communication Schematic Icons
Entertainment/Communication Schematic Icons
Entertainment/Communication Schematic Icons
Entertainment/Communication Schematic Icons
Entertainment/Communication Schematic Icons
Entertainment/Communication Schematic Icons
Entertainment/Communication Schematic Icons
Entertainment/Communication Schematic Icons
Entertainment/Communication Schematic Icons
Entertainment/Communication Schematic Icons
Underhood Fuse Block RBEC 1 and Rear Fuse Block AUX #2, BCK/UP LAMPS, CIG/AUX, HTD MIR, HTD SEAT, RKE/XM/DVD/UGD, RR DEFOG and S/ROOF Fuses
Underhood Fuse Block RBEC 1 and Rear Fuse Block AUX #2, BCK/UP LAMPS, CIG/AUX, HTD MIR, HTD SEAT, RKE/XM/DVD/UGD, RR DEFOG and S/ROOF Fuses
Low Speed Serial Data
G304 and G305
Figure 5:

Redundant Radio Controls (3-Spoke)


Object Number: 1787462  Size: FS
Master Electrical Component List
Radio/Audio System Description and Operation
Control Module References
Redundant Radio Controls (4-Spoke)
DVD Player and Digital Radio Receiver
Entertainment/Communication Schematic Icons
Figure 6:

Redundant Radio Controls (4-Spoke)


Object Number: 1787464  Size: FS
Master Electrical Component List
Radio/Audio System Description and Operation
Control Module References
Redundant Radio Controls (3-Spoke)
Entertainment/Communication Schematic Icons