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

Power, Ground, DLC, Controlled/Monitored Susbsystem References


Object Number: 1392177  Size: FS
Master Electrical Component List
Radio/Audio System Description and Operation
Digital Radio Receiver - U2K
R/H BEC BATT, ABS, COOL FAN #2 GROUND (V6), INT LPS, RADIO BATT and FOG LPS
R/H BEC BATT, ABS, COOL FAN #2 GROUND (V6), INT LPS, RADIO BATT and FOG LPS
Data Link Connector (DLC) Schematics
Park Lamps - Front
Instrument Panel Lamps
Steering Wheel Controls Schematics
G202
G203
Figure 2:

Digital Radio Receiver - U2K


Object Number: 1392179  Size: FS
Master Electrical Component List
Radio/Audio System Description and Operation
Front Speakers - UQ8
Power, Ground, DLC, Controlled/Monitored Subsystem References
R/H BEC BATT, ABS, COOL FAN #2 GROUND (V6), INT LPS, RADIO BATT and FOG LPS
R/H BEC BATT, ABS, COOL FAN #2 GROUND (V6), INT LPS, RADIO BATT and FOG LPS
Data Link Connector (DLC) Schematics
Entertainment Schematic Icons
G202
Figure 3:

Front Speakers - UQ8


Object Number: 1254500  Size: FS
Master Electrical Component List
Radio/Audio System Description and Operation
Rear Speakers - UQ8
Digital Radio Receiver - U2K
Entertainment Schematic Icons
Entertainment Schematic Icons
Entertainment Schematic Icons
Entertainment Schematic Icons
Figure 4:

Rear Speakers - UQ8


Object Number: 1351077  Size: FS
Master Electrical Component List
Radio/Audio System Description and Operation
Amplifier - U85
Front Speakers - UQ8
Entertainment Schematic Icons
Entertainment Schematic Icons
Entertainment Schematic Icons
Entertainment Schematic Icons
Figure 5:

Amplifier - U85


Object Number: 1392180  Size: FS
Master Electrical Component List
Radio/Audio System Description and Operation
Front Speakers - U85
Rear Speakers - UQ8
L/H BEC BATT1, AUX PWR/CIGAR, PARK LPS, PCM BATT, PWR MIRROR, DR LOCK, TRUNK REL/RFA/Radio Amp Fuses and PWR SEAT Circuit Breaker
L/H BEC BATT1, AUX PWR/CIGAR, PARK LPS, PCM BATT, PWR MIRROR, DR LOCK, TRUNK REL/RFA/Radio Amp Fuses and PWR SEAT Circuit Breaker
Entertainment Schematic Icons
Entertainment Schematic Icons
Entertainment Schematic Icons
Entertainment Schematic Icons
G401
Figure 6:

Front Speakers - U85


Object Number: 834769  Size: FS
Master Electrical Component List
Radio/Audio System Description and Operation
Rear Speakers - U85
Amplifier - U85
Figure 7:

Rear Speakers - U85


Object Number: 834776  Size: FS
Master Electrical Component List
Radio/Audio System Description and Operation
Front Speakers - U85