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

Radio and Amplifier Power, Ground, and Communication (UQA)


Object Number: 1750209  Size: FS
Master Electrical Component List
Radio/Audio System Description and Operation
Control Module References
Radio and Amplifier Power, Ground, and Communication (UQS w/o U42)
Underhood Fuse Block B+ Bus - 1 of 2
Low Speed GMLAN Serial Data 1 of 2
Left Rear Fuse Block B+ Bus
Entertainment/Communication Schematic Icons
Entertainment/Communication Schematic Icons
Entertainment/Communication Schematic Icons
Entertainment/Communication Schematic Icons
G402 (1 of 2)
Figure 2:

Radio and Amplifier Power, Ground, and Communication (UQS w/o U42)


Object Number: 1750210  Size: FS
Master Electrical Component List
Radio/Audio System Description and Operation
Control Module References
Radio and Amplifier Power, Ground, and Communication (UQS w/ U42)
Radio and Amplifier Power, Ground, and Communication (UQA)
Underhood Fuse Block B+ Bus - 1 of 2
Low Speed GMLAN Serial Data 1 of 2
Left Rear Fuse Block B+ Bus
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
Low Speed GMLAN Serial Data 1 of 2
G402 (1 of 2)
Figure 3:

Radio, Amplifier, Power, Ground, and Communication (UQS w/U42)


Object Number: 1845599  Size: FS
Master Electrical Component List
Radio/Audio System Description and Operation
Control Module References
Radio, Amplifier and Rear Seat Audio Module Signals (UQS w/ U42)
Radio and Amplifier Power, Ground, and Communication (UQS w/o U42)
Underhood Fuse Block B+ Bus - 1 of 2
Low Speed GMLAN Serial Data 1 of 2
Left Rear Fuse Block B+ Bus
Low Speed GMLAN Serial Data 1 of 2
G402 (1 of 2)
Figure 4:

Radio, Amplifier, and Rear Seat Audio Module Signals (UQS w/U42)


Object Number: 1847582  Size: FS
Master Electrical Component List
Radio/Audio System Description and Operation
Control Module References
Speakers (LHD w/UQA)
Radio and Amplifier Power, Ground, and Communication (UQS w/ U42)
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
Figure 5:

Speakers (LHD w/UQA)


Object Number: 1750211  Size: FS
Master Electrical Component List
Radio/Audio System Description and Operation
Control Module References
Speakers (UQA) - (RHD)
Radio, Amplifier and Rear Seat Audio Module Signals (UQS w/ U42)
OnStar Schematics
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
Entertainment/Communication Schematic Icons
Entertainment/Communication Schematic Icons
Entertainment/Communication Schematic Icons
Entertainment/Communication Schematic Icons
Entertainment/Communication Schematic Icons
Entertainment/Communication Schematic Icons
Figure 6:

Speakers (UQA) - (RHD)


Object Number: 1857975  Size: FS
Master Electrical Component List
Radio/Audio System Description and Operation
Control Module References
Subwoofer and Rear Speakers (UQS)
Speakers (LHD w/UQA)
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
Entertainment/Communication Schematic Icons
Entertainment/Communication Schematic Icons
Entertainment/Communication Schematic Icons
Entertainment/Communication Schematic Icons
Entertainment/Communication Schematic Icons
Entertainment/Communication Schematic Icons
Figure 7:

Subwoofer and Rear Speakers (UQS)


Object Number: 1750212  Size: FS
Master Electrical Component List
Radio/Audio System Description and Operation
Control Module References
Noise Compensation Microphone and Front Speakers (UQS)
Speakers (UQA) - (RHD)
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
Figure 8:

Noise Compensation Microphone and Front Speakers (UQS)


Object Number: 1847585  Size: FS
Master Electrical Component List
Radio/Audio System Description and Operation
Control Module References
Antenna Signals
Subwoofer and Rear Speakers (UQS)
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
Figure 9:

Antenna Signals


Object Number: 1750213  Size: FS
Master Electrical Component List
Radio/Audio System Description and Operation
Control Module References
Radio Power, Ground, and Communication (UQA)
Noise Compensation Microphone and Front Speakers (UQS)
Rear Video Display (U42)
Radio and Amplifier Power, Ground, and Communication (UQA)
Traffic Information Receiver (U2X)
Figure 10:

Radio Power, Ground, and Communication (UQA)


Object Number: 1750207  Size: FS
Master Electrical Component List
Radio/Audio System Description and Operation
Control Module References
Traffic Information Receiver (U2X)
Antenna Signals
Underhood Fuse Block B+ Bus - 1 of 2
Interior Lamps Dimming Controls
Low Speed GMLAN Serial Data 1 of 2
G402 (1 of 2)
Figure 11:

Traffic Information Receiver (U2X)


Object Number: 1750429  Size: FS
Master Electrical Component List
Radio/Audio System Description and Operation
Control Module References
Digital Radio Receiver (U2K)
Radio Power, Ground, and Communication (UQA)
Power Modes - ACCY and RAP
ABS MOTOR Fuse, ACCY Relay, ACCY WPR Fuse, and TRLR BT Fuse
Entertainment/Communication Schematic Icons
ABS MOTOR Fuse, ACCY Relay, ACCY WPR Fuse, and TRLR BT Fuse
Entertainment/Communication Schematic Icons
G402 (1 of 2)
Figure 12:

Digital Radio Receiver (U2K)


Object Number: 1750214  Size: FS
Master Electrical Component List
Radio/Audio System Description and Operation
Control Module References
Navigation Controls (U2V/U2X/U2Y)
Traffic Information Receiver (U2X)
Left Rear Fuse Block B+ Bus
3RD ROW SW/RFA Fuse, AMP Fuse, ONSTAR TV/XM Fuse, RSA/RSE Fuse, and RSM Fuse
Low Speed GMLAN Serial Data 2 of 2
Entertainment/Communication Schematic Icons
Entertainment/Communication Schematic Icons
G402 (1 of 2)
Figure 13:

Navigation Controls (U2V/U2X/U2Y)


Object Number: 1750433  Size: FS
Master Electrical Component List
Navigation System Description and Operation
Control Module References
Steering Wheel Controls
Digital Radio Receiver (U2K)
Underhood Fuse Block B+ Bus - 1 of 2
Wheel Speed Sensors
Low Speed GMLAN Serial Data 1 of 2
Entertainment/Communication Schematic Icons
Entertainment/Communication Schematic Icons
Entertainment/Communication Schematic Icons
Entertainment/Communication Schematic Icons
G402 (1 of 2)
Figure 14:

Steering Wheel Controls


Object Number: 1750215  Size: FS
Master Electrical Component List
Radio/Audio System Description and Operation
Control Module References
Navigation Controls (U2V/U2X/U2Y)
Cruise Control Schematics
Tap Shift System
Tap Shift System
Entertainment/Communication Schematic Icons
Low Speed GMLAN Serial Data 1 of 2