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

Audio Systems Power and Grounds


Object Number: 685308  Size: FS
Master Electrical Component List
Radio Speaker Output
G200 (2 of 2)
G200 (2 of 2)
G300 and G302
Serial Data Class 2
Figure 2:

Radio Speaker Output


Object Number: 685321  Size: FS
Master Electrical Component List
Antenna Module
Audio Systems Power and Grounds
Entertainment Schematic Icons
Entertainment Schematic Icons
Entertainment Schematic Icons
Entertainment Schematic Icons
Entertainment Schematic Icons
Entertainment Schematic Icons
Entertainment Schematic Icons
Figure 3:

Antenna Module


Object Number: 685327  Size: FS
Master Electrical Component List
Radio Speaker Output