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

Radio Power and Ground


Object Number: 661293  Size: FS
Master Electrical Component List
Radio/Audio System Description and Operation
Amplifier Power and Ground and Remote CD Changer
RDO and CD/PH Fuses
PWR WDO Circuit Breaker, RDO/PH and SUNRF Fuses
VF Dimming and Control
Steering Wheel Controls Schematic
G202 - 1 of 4
G202 - 3 of 4
Figure 2:

Amplifier Power and Ground and Remote CD Changer


Object Number: 1441803  Size: FS
Master Electrical Component List
Radio/Audio System Description and Operation
Radio Speaker Outputs (UW6)
Radio Power and Ground
RDO and CD/PH Fuses
Entertainment Schematic Icons
Power and Ground
VIU Output Signals
VIU Output Signals
Power, Ground, and Serial Data Lines
Power, Ground, and Serial Data Lines
Entertainment Schematic Icons
G202 - 3 of 4
G202 - 1 of 4
G202 - 3 of 4
Figure 3:

Radio Speaker Outputs (UW6)


Object Number: 661296  Size: FS
Master Electrical Component List
Radio/Audio System Description and Operation
Radio Outputs (U99)
Amplifier Power and Ground and Remote CD Changer
Entertainment Schematic Icons
Entertainment Schematic Icons
Entertainment Schematic Icons
Figure 4:

Radio Outputs (U99)


Object Number: 661297  Size: FS
Master Electrical Component List
Radio/Audio System Description and Operation
Amplifier Door Speaker Outputs (U99)
Radio Speaker Outputs (UW6)
Entertainment Schematic Icons
Entertainment Schematic Icons
Entertainment Schematic Icons
Entertainment Schematic Icons
Figure 5:

Amplifier Door Speaker Outputs (U99)


Object Number: 661298  Size: FS
Master Electrical Component List
Radio/Audio System Description and Operation
Amplifier Speaker Output (U99)
Radio Outputs (U99)
Figure 6:

Amplifier Speaker Output (U99)


Object Number: 661299  Size: FS
Master Electrical Component List
Radio/Audio System Description and Operation
Antenna Module
Amplifier Door Speaker Outputs (U99)
Entertainment Schematic Icons
Entertainment Schematic Icons
Entertainment Schematic Icons
Entertainment Schematic Icons
Figure 7:

Antenna Module


Object Number: 661300  Size: FS
Master Electrical Component List
Radio/Audio System Description and Operation
Amplifier Speaker Output (U99)
Defogger Schematics