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

Power and Ground


Object Number: 1594140  Size: FS
Master Electrical Component List
Body Control System Description and Operation
Control Module References
Controlled/Monitored Subsystem References - 1 of 3
Underhood Fuse Block
ACCY/RUN, RUN/START, Bus Bars, and IGN B Fuse
AIR PUMP, EAP, ECM, HDM, HI HEADLAMP-LT, HI HEADLAMP-RT, IGN COILS, LO HEADLAMP-LT, LO HEADLAMP-RT, PCM B and TBC I Fuses
B+ Bus - Rear Fuse Block
ACCY/RUN, RUN/START, Bus Bars, and IGN B Fuse
Ignition Switch - ACCY/RUN/START, RUN, and START Bus Bars, IGN A and CRNK Fuses
Ignition Switch - ACCY/RUN/START, RUN, and START Bus Bars, IGN A and CRNK Fuses
G302 - 2 of 2
G302 - 1 of 2, G303, and G304
Brake Warning System Schematics
Retained Accessory Power (RAP) Schematics
Headlamp Washer - CE4
Steering Wheel Schematics
Headlamp Washer - CE4
Horns Schematics
Audible Warning Schematics
Figure 2:

Controlled/Monitored Subsystem References 1 of 3


Object Number: 1594141  Size: FS
Master Electrical Component List
Body Control System Description and Operation
Control Module References
Controlled/Monitored Subsystem References - 2 of 3
Power and Ground
Intrusion and Indication Sensor Signals
Rear Wiper/Washer Controls
Rear Doors
Power Windows - Left
Power Windows - Right
Figure 3:

Controlled/Monitored Subsystem References 2 of 3


Object Number: 1594142  Size: FS
Master Electrical Component List
Body Control System Description and Operation
Control Module References
Controlled/Monitored Subsystem References - 3 of 3
Controlled/Monitored Subsystem References - 1 of 3
Headlamp Switch
Headlamps
Headlamp Switch
I/P Dimming Supply 1 of 2
Intrusion and Indication Sensor Signals
Headlamp Switch
Park Lamp Relay
Backup Lamps
Interior Lamps Controls
Fog Lights Schematics
Headlamp Switch
Figure 4:

Controlled/Monitored Subsystem References 3 of 3


Object Number: 1594143  Size: FS
Master Electrical Component List
Body Control System Description and Operation
Control Module References
Controlled/Monitored Subsystem References - 2 of 3
Ambient Light/Sunload Sensors
Ambient Light/Sunload Sensors
Headlamps
Interior Lamps Controls
Courtesy Lamp Supply
Outside Moisture Sensor, and Front Wiper/Washer Motor
Door Switch Inputs
SP205
Theft Deterrent Control Module and Alarm
Intrusion and Indication Sensor Signals
Theft Deterrent System Schematics