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

Power, Ground, Serial Data and Audio Signal Communication


Object Number: 1471019  Size: FS
Master Electrical Component List
Radio/Audio System Description and Operation
Control Module References
Radio Antenna Module and Antennas
OnStar (UE1)
Left Rear Fuse Block B+ Bus
Left Rear Fuse Block SEAT Circuit Breaker, TRUNK Relay/Fuse, AMP, AUDIO, DRIVER DR MOD and REAR DR MOD Fuses
Navigation Antenna, Radio, Audio Amplifier, VCIM and ISRVM
Entertainment Schematic Icons
Entertainment Schematic Icons
Entertainment Schematic Icons
Entertainment Schematic Icons
Class 2 Serial Data Bus - LHD - 2 of 2
Entertainment Schematic Icons
Entertainment Schematic Icons
G402 - 1 of 2
Steering Wheel Controls - 2.8L/3.6L (LP1/LY7)
Gages - 5.7L (L56)
Navigation Antenna, Radio, Audio Amplifier, VCIM and ISRVM
OnStar (UE1)
Figure 2:

Radio Antenna Module and Antennas


Object Number: 1471025  Size: FS
Master Electrical Component List
Radio/Audio System Description and Operation
Control Module References
Digital Radio Receiver (U2Y/U2X/U2K/U2L)
Power, Ground, Serial Data and Audio Signal Communication
Left Rear Fuse Block B+ Bus
Left Rear Fuse Block SEAT Circuit Breaker, TRUNK Relay/Fuse, AMP, AUDIO, DRIVER DR MOD and REAR DR MOD Fuses
Left Rear Fuse Block SEAT Circuit Breaker, TRUNK Relay/Fuse, AMP, AUDIO, DRIVER DR MOD and REAR DR MOD Fuses
Keyless Entry
Traffic Information Receiver - Japan (U2X/U2Y)
Tire Pressure Monitoring System
Class 2 Serial Data Bus - LHD - 2 of 2
Figure 3:

Digital Radio Receiver (U2Y/U2K/U2L)


Object Number: 1471028  Size: FS
Master Electrical Component List
Radio/Audio System Description and Operation
Control Module References
Speakers (U66)
Radio Antenna Module and Antennas
Left Rear Fuse Block B+ Bus
Left Rear Fuse Block SEAT Circuit Breaker, TRUNK Relay/Fuse, AMP, AUDIO, DRIVER DR MOD and REAR DR MOD Fuses
Class 2 Serial Data Bus - LHD - 2 of 2
Entertainment Schematic Icons
Entertainment Schematic Icons
G402 - 1 of 2
Figure 4:

Speakers (U66)


Object Number: 1471031  Size: FS
Master Electrical Component List
Radio/Audio System Description and Operation
Control Module References
Speakers (U57)
Digital Radio Receiver (U2Y/U2X/U2K/U2L)
Entertainment Schematic Icons
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 5:

Speakers (U57)


Object Number: 1471032  Size: FS
Master Electrical Component List
Radio/Audio System Description and Operation
Control Module References
Speakers (U66)
Entertainment Schematic Icons
Entertainment Schematic Icons
Entertainment Schematic Icons
Entertainment Schematic Icons
Entertainment Schematic Icons
Entertainment Schematic Icons
Entertainment Schematic Icons