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

Power, Ground, Components, and GPS


Object Number: 879889  Size: FS
Master Electrical Component List
Navigation System Description and Operation
Navigation System Schematics-Auxiliary RCA Video Jacks, Export Microphone
Instrument Cluster Schematics-PCM Signals
Power Distribution Schematics-NAV, EXPORT BRK and SDAR Fuses
Data Link Connector (DLC) Schematics-Serial Data Line (LH Drive) (1 of 2)
Ground Distribution Schematics-G200
Ground Distribution Schematics-G200
Figure 2:

Auxiliary RCA Video Jacks and Export Microphone


Object Number: 788001  Size: FS
Master Electrical Component List
Navigation System Description and Operation
Navigation System Schematics-Domestic Microphone
Navigation Systems Schematics-Power, Ground, Components, and GPS
Navigation System Schematic Icons
Figure 3:

Domestic Microphone (Late Production)


Object Number: 1202067  Size: FS
Master Electrical Component List
Navigation System Description and Operation
Navigation System Schematics-TV Antenna Module
Navigation System Schematics-Auxiliary RCA Video Jacks, Export Microphone
Figure 4:

TV Antenna Module


Object Number: 788004  Size: FS
Master Electrical Component List
Navigation System Description and Operation
Navigation System Schematics-Traffic Information Receiver (VICS)
Navigation System Schematics-Domestic Microphone
Navigation System Schematic Icons
Navigation System Schematic Icons
Figure 5:

Traffic Information Receiver (VICS)


Object Number: 879892  Size: FS
Master Electrical Component List
Navigation System Description and Operation
Navigation System Schematics-TV Antenna Module
Navigation System Schematic Icons
Navigation System Schematic Icons
Power Distribution Schematics-NAV, EXPORT BRK and SDAR Fuses
Power Distribution Schematics-ACCY,WSW Fuses,ACCY Relay-HDLP/WASH Cir Brkr
Ground Distribution Schematics-G401 (2 of 3)