GM Service Manual Online
For 1990-2009 cars only

Radio/Audio System Schematics U1C/UM7

Figure 1:

Radio Power, Ground and Speakers


Object Number: 1586683  Size: FS
Master Electrical Component List
Radio/Audio System Description and Operation
Control Module References
Redundant Radio Controls
Entertainment Schematic Icons
Entertainment Schematic Icons
Entertainment Schematic Icons
Entertainment Schematic Icons
PWR SEAT Circuit Breaker, LH HDLP Fuse, RH HDLP Fuse, BRAKE Fuse, PREM AUD Fuse, BATT FEED Fuse and the HTD SEATS Fuse
L66
DLC Schematic (M/T)
IGN Fuse and the Ignition Switch Circuits
TURN Fuse, BCM Fuse, RADIO(IGN) Fuse, HVAC Fuse and the HTD SEATS Fuse
Interior Lights Dimming Schematic
Park Lamps - w/T82
Onstar Schematic
G201
Figure 2:

Redundant Radio Controls


Object Number: 1620279  Size: FS
Master Electrical Component List
Radio/Audio System Description and Operation
Radio Power, Ground and Speakers
Entertainment Schematic Icons
Interior Lights Dimming Schematic

Radio/Audio System Schematics WBM

Figure 1:

Radio and Amplifier Power and Ground


Object Number: 1586684  Size: FS
Master Electrical Component List
Radio/Audio System Description and Operation
Control Module References
Speakers
Entertainment Schematic Icons
Entertainment Schematic Icons
Entertainment Schematic Icons
Entertainment Schematic Icons
PWR SEAT Circuit Breaker, LH HDLP Fuse, RH HDLP Fuse, BRAKE Fuse, PREM AUD Fuse, BATT FEED Fuse and the HTD SEATS Fuse
PWR SEAT Circuit Breaker, LH HDLP Fuse, RH HDLP Fuse, BRAKE Fuse, PREM AUD Fuse, BATT FEED Fuse and the HTD SEATS Fuse
IGN Fuse and the Ignition Switch Circuits
L66
DLC Schematic (M/T)
Interior Lights Dimming Schematic
Park Lamps - w/T82
Onstar Schematic
G401 and G403
G201
Figure 2:

Speakers


Object Number: 1586686  Size: FS
Master Electrical Component List
Radio/Audio System Description and Operation
Control Module References
Redundant Radio Controls
Radio and Amplifier Power and Ground
Entertainment Schematic Icons
Figure 3:

Redundant Radio Controls


Object Number: 1620279  Size: FS
Master Electrical Component List
Radio/Audio System Description and Operation
Speakers
Entertainment Schematic Icons
Interior Lights Dimming Schematic

Radio/Audio System Schematics U2K

Figure 1:

Radio and Amplifier Power and Ground


Object Number: 1586684  Size: FS
Master Electrical Component List
Radio/Audio System Description and Operation
Control Module References
Digital Radio Receiver
Entertainment Schematic Icons
Entertainment Schematic Icons
Entertainment Schematic Icons
Entertainment Schematic Icons
PWR SEAT Circuit Breaker, LH HDLP Fuse, RH HDLP Fuse, BRAKE Fuse, PREM AUD Fuse, BATT FEED Fuse and the HTD SEATS Fuse
PWR SEAT Circuit Breaker, LH HDLP Fuse, RH HDLP Fuse, BRAKE Fuse, PREM AUD Fuse, BATT FEED Fuse and the HTD SEATS Fuse
IGN Fuse and the Ignition Switch Circuits
L66
DLC Schematic (M/T)
Interior Lights Dimming Schematic
Park Lamps - w/T82
Onstar Schematic
G401 and G403
G201
Figure 2:

Digital Radio Receiver


Object Number: 1586685  Size: FS
Master Electrical Component List
Radio/Audio System Description and Operation
Control Module References
Speakers
Radio and Amplifier Power and Ground
Entertainment Schematic Icons
RADIO Fuse, LOCK/MIRROR Fuse, BCM/CLUSTER Fuse, INT LTS Fuse, PARK Fuse and the HZRD Fuse
RADIO Fuse, LOCK/MIRROR Fuse, BCM/CLUSTER Fuse, INT LTS Fuse, PARK Fuse and the HZRD Fuse
RADIO Fuse, LOCK/MIRROR Fuse, BCM/CLUSTER Fuse, INT LTS Fuse, PARK Fuse and the HZRD Fuse
Figure 3:

Speakers


Object Number: 1586686  Size: FS
Master Electrical Component List
Radio/Audio System Description and Operation
Control Module References
Redundant Radio Controls
Digital Radio Receiver
Entertainment Schematic Icons
Figure 4:

Redundant Radio Controls


Object Number: 1620279  Size: FS
Master Electrical Component List
Radio/Audio System Description and Operation
Speakers
Entertainment Schematic Icons
Interior Lights Dimming Schematic