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

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


Object Number: 1874805  Size: FS
Master Electrical Component List
Radio/Audio System Description and Operation
Control Module References
Radio and Amplifier, Power, Ground, and Communication (UQS without U42)
Figure 2:

Radio and Amplifier Power, Ground, and Communication (UQS without U42)


Object Number: 1874809  Size: FS
Master Electrical Component List
Radio/Audio System Description and Operation
Control Module References
Radio and Amplifier, Power, Ground, and Communication (UQS with U42)
Radio and Amplifier, Power, Ground, and Communication (UQA)
Figure 3:

Radio, Amplifier, Power, Ground, and Communication (UQS with U42)


Object Number: 1874811  Size: FS
Master Electrical Component List
Radio/Audio System Description and Operation
Control Module References
Radio, Amplifier and Rear Seat Audio Module Signals (UQS with U42)
Radio and Amplifier, Power, Ground, and Communication (UQS without U42)
Figure 4:

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


Object Number: 1874822  Size: FS
Master Electrical Component List
Radio/Audio System Description and Operation
Control Module References
Speakers LHD (UQA)
Radio and Amplifier, Power, Ground, and Communication (UQS with U42)
Figure 5:

Speakers LHD (UQA)


Object Number: 1874826  Size: FS
Master Electrical Component List
Radio/Audio System Description and Operation
Control Module References
Speakers RHD (UQA)
Radio, Amplifier and Rear Seat Audio Module Signals (UQS with U42)
Figure 6:

Speakers RHD (UQA)


Object Number: 1874829  Size: FS
Master Electrical Component List
Radio/Audio System Description and Operation
Control Module References
Subwoofer and Rear Speakers (UQS)
Speakers LHD (UQA)
Figure 7:

Subwoofer and Rear Speakers (UQS)


Object Number: 1874833  Size: FS
Master Electrical Component List
Radio/Audio System Description and Operation
Control Module References
Noise Compensation Microphone and Front Speakers (UQS)
Speakers RHD (UQA)
Figure 8:

Noise Compensation Microphone and Front Speakers (UQS)


Object Number: 1874838  Size: FS
Master Electrical Component List
Radio/Audio System Description and Operation
Control Module References
Antenna Signals
Subwoofer and Rear Speakers (UQS)
Figure 9:

Antenna Signals


Object Number: 1874845  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)
Figure 10:

Radio Power, Ground, and Communication (UQA)


Object Number: 1874850  Size: FS
Master Electrical Component List
Radio/Audio System Description and Operation
Control Module References
Traffic Information Receiver (U2X)
Antenna Signals
Figure 11:

Traffic Information Receiver (U2X)


Object Number: 1874853  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)
Figure 12:

Digital Radio Receiver (U2K)


Object Number: 1874855  Size: FS
Master Electrical Component List
Radio/Audio System Description and Operation
Control Module References
Navigation Controls (U2V/U2X/U2Y)
Traffic Information Receiver (U2X)
Figure 13:

Navigation Controls (U2V/U2X/U2Y)


Object Number: 1874862  Size: FS
Master Electrical Component List
Radio/Audio System Description and Operation
Control Module References
Steering Wheel Controls (N31)
Digital Radio Receiver (U2K)
Figure 14:

Steering Wheel Controls (N31)


Object Number: 1990592  Size: FS
Master Electrical Component List
Radio/Audio System Description and Operation
Control Module References
Steering Wheel Controls (Without N31)
Navigation Controls (U2V/U2X/U2Y)
Figure 15:

Steering Wheel Controls (without N31)


Object Number: 1874864  Size: FS
Master Electrical Component List
Radio/Audio System Description and Operation
Control Module References
Navigation Controls (U2V/U2X/U2Y)