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

Power, Ground and Serial Data


Object Number: 1787544  Size: FS
Master Electrical Component List
Body Control System Description and Operation
Control Module References
Controlled/Monitored Subsystem References (1 of 4)
Underhood Fuse Block IBCM 1, Body Control Module (BCM) AIRBAG (BATT), CLUSTER/THEFT, HVAC CTRL (BATT), IGN SENSOR and RADIO Fuses
Underhood Fuse Block IBCM 1, Body Control Module (BCM) AIRBAG (BATT), CLUSTER/THEFT, HVAC CTRL (BATT), IGN SENSOR and RADIO Fuses
Underhood Fuse Block IBCM 2, Body Control Module (BCM), ACCESSORY Relay, DOOR LOCK, INTERIOR LIGHTS, POWER WINDOWS, REAR WIPER, ROOF/HEAT SEAT and WIPER SW Fuses
Power, Ground and High Speed Serial Data
Low Speed Serial Data
Underhood Fuse Block IBCM 1, Body Control Module (BCM) AIRBAG (BATT), CLUSTER/THEFT, HVAC CTRL (BATT), IGN SENSOR and RADIO Fuses
Keyless Entry
G201
G203
G304 and G305
Figure 2:

Controlled/Monitored Subsystem References 1 of 4


Object Number: 1787546  Size: FS
Master Electrical Component List
Body Control System Description and Operation
Control Module References
Controlled/Monitored Subsystem References (2 of 4)
Power, Ground and Serial Data
Underhood Fuse Block IBCM 2, Body Control Module (BCM), ACCESSORY Relay, DOOR LOCK, INTERIOR LIGHTS, POWER WINDOWS, REAR WIPER, ROOF/HEAT SEAT and WIPER SW Fuses
Underhood Fuse Block IBCM 2, Body Control Module (BCM), ACCESSORY Relay, DOOR LOCK, INTERIOR LIGHTS, POWER WINDOWS, REAR WIPER, ROOF/HEAT SEAT and WIPER SW Fuses
Power, Ground and Blower Motor Controls
Underhood Fuse Block RBEC 2, RUN RLY, Body Control Module (BCM), HVAC BLOWER HIGH Relay, RUN Relay, HVAC BLOWER, HVAC CTRL (IGN) Rear Fuse Block FUEL/PMP Relay, PARK LP Relay, TRUNK Relay, DRV ST
Figure 3:

Controlled/Monitored Subsystem References 2 of 4


Object Number: 1787549  Size: FS
Master Electrical Component List
Body Control System Description and Operation
Control Module References
Controlled/Monitored Subsystem References (3 of 4)
Controlled/Monitored Subsystem References (1 of 4)
Sedan
Extended Sedan
Immobilizer Schematics
Theft Deterrent System Schematics
Door Lock Switches
Door Lock Actuators
Door Ajar Indicators
Figure 4:

Controlled/Monitored Subsystem References 3 of 4


Object Number: 1787551  Size: FS
Master Electrical Component List
Body Control System Description and Operation
Control Module References
Controlled/Monitored Subsystem References (4 of 4)
Controlled/Monitored Subsystem References (2 of 4)
Headlights/Daytime Running Lights (DRL) Schematics
Fog Lights Schematics
Backup Lamps and License Lamps
Turn Signals and Stop Lamps
Ambient Light Sensor, Brake Pedal Position Sensor, Hazard Switch and Turn Signal/Multifunction Switch
Park Lamps
Inputs
Displays
Figure 5:

Controlled/Monitored Subsystem References 4 of 4


Object Number: 1787553  Size: FS
Master Electrical Component List
Body Control System Description and Operation
Control Module References
Controlled/Monitored Subsystem References (3 of 4)
Power, Ground, Serial Data and MIL
Power, Ground, Serial Data and MIL
Power, Ground, Serial Data and MIL
Tap Up/Tap Down Switch
Tap Up/Tap Down Switch
Shift Lock Control Schematics
Coolant Indicators
Compressor Controls
Compressor Controls
Brake Pedal Position Sensor, Data Link Communications and Traction Control Switch
Hydraulic Brake Schematics
Steering Wheel Controls (3-Spoke)
Adjustable Pedals Schematics
Defogger Schematics
Horn Schematics
Front Wiper/Washers
Front Wiper/Washers