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

Radio w/o U2K


Object Number: 1511174  Size: FS
Master Electrical Component List
Radio/Audio System Description and Operation
Control Module References
CD AND MP3 w/Amplifier - 1 of 2
RDO Fuse, DR LCK Fuse, INT LIGHTS Fuse, PWR WNDW Fuse, S ROOF Fuse, ECM/TCM Fuse, SDM Fuse, RAP Relay, INTERIOR LAMPS PCB Relay, Door Lock PCB Relays
RDO Fuse, DR LCK Fuse, INT LIGHTS Fuse, PWR WNDW Fuse, S ROOF Fuse, ECM/TCM Fuse, SDM Fuse, RAP Relay, INTERIOR LAMPS PCB Relay, Door Lock PCB Relays
DLC Power, Ground, and Low Speed GMLAN
Steering Wheel Controls
OnStar Schematics
Entertainment Schematic Icons
Entertainment Schematic Icons
Entertainment Schematic Icons
Entertainment Schematic Icons
Entertainment Schematic Icons
Entertainment Schematic Icons
Entertainment Schematic Icons
Entertainment Schematic Icons
Figure 2:

CD and MP3 w/Amplifier - 1 of 2


Object Number: 1511176  Size: FS
Master Electrical Component List
Radio/Audio System Description and Operation
Control Module References
CD and MP3 w/Amplifier - 2 of 2
Radio w/o U2K
RDO Fuse, DR LCK Fuse, INT LIGHTS Fuse, PWR WNDW Fuse, S ROOF Fuse, ECM/TCM Fuse, SDM Fuse, RAP Relay, INTERIOR LAMPS PCB Relay, Door Lock PCB Relays
RDO Fuse, DR LCK Fuse, INT LIGHTS Fuse, PWR WNDW Fuse, S ROOF Fuse, ECM/TCM Fuse, SDM Fuse, RAP Relay, INTERIOR LAMPS PCB Relay, Door Lock PCB Relays
DLC Power, Ground, and Low Speed GMLAN
Steering Wheel Controls
OnStar Schematics
Entertainment Schematic Icons
Entertainment Schematic Icons
G201
Figure 3:

CD and MP3 w/Amplifier - 2 of 2


Object Number: 1511180  Size: FS
Master Electrical Component List
Radio/Audio System Description and Operation
Control Module References
Digital Radio Receiver (U2K)
CD AND MP3 w/Amplifier - 1 of 2
Ignition Switch, BCM2 Fuse, IGN SW Fuse, STOP LPS Fuse, AUDIO AMPLIFIER Fuse, CLUSTER Fuse, HVAC/PK3 Fuse
Entertainment Schematic Icons
Entertainment Schematic Icons
Entertainment Schematic Icons
Entertainment Schematic Icons
Entertainment Schematic Icons
Entertainment Schematic Icons
Entertainment Schematic Icons
Entertainment Schematic Icons
G201
Figure 4:

Digital Radio Receiver (U2K)


Object Number: 1511183  Size: FS
Master Electrical Component List
Radio/Audio System Description and Operation
Control Module References
CD and MP3 w/Amplifier - 2 of 2
RUN/CRANK Relay, I/P IGN Fuse, PRK/NEUT Fuse, BACKUP Fuse, ABS Fuses, ECM TRANS Fuse, LIGHTER Fuse, CAN VENT Fuse, EPS Fuse, BCM2 and 3 Fuses, HEATED SEAT Fuse, S-BAND/ONSTAR Fuse, MIRROR Fuse
Entertainment Schematic Icons
Entertainment Schematic Icons
RUN/CRANK Relay, I/P IGN Fuse, PRK/NEUT Fuse, BACKUP Fuse, ABS Fuses, ECM TRANS Fuse, LIGHTER Fuse, CAN VENT Fuse, EPS Fuse, BCM2 and 3 Fuses, HEATED SEAT Fuse, S-BAND/ONSTAR Fuse, MIRROR Fuse
DLC Power, Ground, and Low Speed GMLAN
G401 - 2 of 2
Figure 5:

Steering Wheel Controls


Object Number: 1510529  Size: FS
Master Electrical Component List
Radio/Audio System Description and Operation
Control Module References
SIR Caution for Zoning