GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2004 🢒 Century 🢒 Engine 🢒 Engine Controls - 3.1L 🢒 Power and Grounding Component Views
Figure 1:

Front of Vehicle
Object Number: 1340766 Size: MF
(1)C120
(2)Fuse Block - Underhood, C3
(3)G101
(4)Fog Lamp - LF Connector (Regal)
(5)C106
(6)Forward Lamp Wiring Harness
(7)Ambient Outside Air Temperature Sensor Connector (CJ2)
(8)Fog Lamp - RF Connector (Regal)
(9)C107
(10)C103
Figure 2:

Battery Cable and Grounding Point
Object Number: 581299 Size: LF
(1)Battery
(2)Fuse Block-Underhood
(3)G100
Figure 3:

Underhood Accessory Wiring Junction Block
Object Number: 399300 Size: LF
(1)Underhood Accessory Wiring Junction, C6
(2)Underhood Accessory Wiring Junction Block, C3 (Forward Lamp)
(3)Underhood Accessory Wiring Junction Block, C2 (Instrument Panel)
(4)Underhood Accessory Wiring Junction Block, C1 (Engine)
(5)Underhood Accessory Wiring Junction Block, C7
(6)Underhood Accessory Wiring Junction Block, C5
(7)Underhood Accessory Wiring Junction Block, C4
Figure 4:

Lower Front of the Engine Components (L36)
Object Number: 1364274 Size: MF
(1)Starter Solenoid B Terminal
(2)Fusible Link from Generator
(3)G113
(4)Battery Cable Wiring Harness
(5)Engine Wiring Harness
(6)Starter Solenoid S Terminal
(7)Engine Oil Level Sensor
(8)Knock Sensor (KS) 1
(9)Starter
Figure 5:

Lower Front of the Engine Components (L67)
Object Number: 1364339 Size: MF
(1)Starter Solenoid B Terminal
(2)Fusible Link from Generator
(3)G113
(4)Battery Cable Wiring Harness
(5)Engine Wiring Harness
(6)Starter Solenoid S Terminal
(7)Engine Oil Level Sensor
(8)Knock Sensor (KS) 1
Figure 6:

RF of the Engine Compartment (L36/L67)
Object Number: 1043757 Size: MF
(1)Camshaft Position (CMP) Sensor
(2)Ignition Control Module (ICM) Wiring Harness
(3)C110
(4)Ignition Control Module (ICM)
(5)Ignition Coils
(6)G111
(7)Ignition Control Module (ICM) Wiring Harness
(8)Ignition Control Module (ICM) Wiring Harness
(9)Crankshaft Position (CKP) Sensor
Figure 7:

Left Side of Engine Compartment (LG8)
Object Number: 849492 Size: MF
(1)G111
(2)G113
(3)C113
(4)Electronic Brake Control Module (EBCM) Connector (JL9/JM4)
(5)C101
(6)A/C Refrigerant Pressure Sensor Connector
(7)Wheel Speed Sensor (WSS) - LF (JL9/JM4)
Figure 8:

LR of the Engine Compartment
Object Number: 1095521 Size: LF
(1)P103
(2)I/P Wiring Harness
(3)Cruise Control Module (CCM) Connector
(4)Cruise Control Module (CCM) (K34)
(5)Electronic Brake Control Module (EBCM) (JL9/JM4)
(6)Electronic Brake Control Module (EBCM) Connector (JL9/JM4)
(7)Engine Wiring Harness
(8)Brake Fluid Level Switch
(9)C101
(10)A/C Refrigerant Pressure Sensor
(11)Engine Wiring Harness
(12)G171 (JL9/JM4)
Figure 9:

Steering Column
Object Number: 903673 Size: MF
(1)Turn Signal/Multifunction Switch
(2)Ignition Lock Cylinder Control Actuator (Regal)
(3)Ignition Switch
(4)Ignition Lock Cylinder
(5)Steering Column
Figure 10:

Upper Left of Instrument Panel
Object Number: 1323986 Size: MF
(1)Ambient Light Sensor
(2)Sun Load Sensor (CJ2)
(3)G203
Figure 11:

Right Side of the I/P - Front
Object Number: 1250639 Size: LF
(1)C200
(2)G200
(3)Fuse Block - I/P
(4)I/P Wiring Harness
(5)C290
(6)Body Wiring Harness
(7)C200
Figure 12:

Left Side of the Passenger Compartment
Object Number: 1340808 Size: MF
(1)Body Wiring Harness
(2)C351
(3)Park Brake Cable
(4)G301
(5)C301
(6)C311
(7)Body Wiring Harness
Figure 13:

Left Side of Rear Compartment
Object Number: 1367423 Size: LF
(1)Speaker - RR Connector
(2)G401
(3)P425
(4)Evaporative Emissions (EVAP) Canister Vent Solenoid Connector
(5)C402