GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2009 🢒 Lucerne 🢒 Power and Signal Distribution 🢒 Wiring Systems and Power Management 🢒 Front of Vehicle/Engine Compartment Component Views
Figure 1:

Left Rear of Engine Compartment
Object Number: 1707563 Size: LF
(1)Master Cylinder Reservoir
(2)Brake Fluid Level Switch
(3)Electronic Brake Control Module (EBCM)
Figure 2:

Front Engine Compartment
Object Number: 1707774 Size: LF
(1)A/C Compressor
(2)A/C Condensor
(3)A/C Compressor
(4)A/C Refrigerant Pressure Sensor
(5)A/C Compressor Clutch Connector
Figure 3:

Right Front of the Engine Compartment
Object Number: 1707099 Size: LF
(1)G104
(2)Fuse Block - Underhood
(3)G111
Figure 4:

G101
Object Number: 1707103 Size: LF
(1)Left Front Strut Tower
(2)G101
Figure 5:

Front of the Engine Compartment
Object Number: 1707109 Size: MF
(1)Inflatable Restraint Front End Sensor - Left
(2)Cooling Fan - Left
(3)Cooling Fan - Right
(4)Inflatable Restraint Front End Sensor - Right
Figure 6:

Engine Harness Routing (L26)
Object Number: 1709222 Size: LF
(1)J109
(2)G114
(3)X111 Engine Harness to Body Harness
(4)J114
(5)J113
(6)G100
(7)Automatic Transmission Connector
(8)J106
(9)J108
(10)J101
(11)Fuse Block-Underhood X3
(12)X110 Engine Harness to Ignition Control Module Harness
(13)J115
(14)J116
Figure 7:

Engine Compartment - Left Rear (LD8/L37)
Object Number: 1685480 Size: MF
(1)Transmission Control Module (TCM)
(2)Fasteners
(3)Transmission Control Module (TCM) Bracket
Figure 8:

Front of Engine Compartment
Object Number: 1706947 Size: LF
(1)Hood Ajar Switch (AP3 / AP8)
Figure 9:

Wiper/Washer Components
Object Number: 1706953 Size: LF
(1)Windshield Washer Fluid Container
(2)Windshield Washer Fluid Pump
(3)Windshield Washer Fluid Level Switch
(4)Windshield Wiper Motor
(5)Windshield Washer Fluid Container
(6)Windshield Heated Washer Fluid Module (XA7)
Figure 10:

Front of Vehicle
Object Number: 1707166 Size: LF
(1)Park/Turn Signal Lamp - Left Front
(2)Marker Lamp - Left Front
(3)Cornering Lamp - Left (TUH)
(4)Headlamp - High Beam - Left
(5)Headlamp - Low Beam - Left
(6)Fog Lamp - Left Front (T96)
(7)Fog Lamp - Right Front (T96)
(8)Headlamp - Low Beam - Right
(9)Cornering Lamp - Right (TUH)
(10)Marker Lamp - Right Front
(11)Headlamp - High Beam - Right
(12)Park/Turn Signal Lamp - Right Front
Figure 11:

Left Front of Engine Compartment
Object Number: 1707177 Size: LF
(1)Front Right Fender
(2)Horn Assembly
Figure 12:

Power Steering Components
Object Number: 1707641 Size: LF
(1)Steering Angle Sensor (JL4)
(2)Electronic Brake Control Module (EBCM)
(3)Variable Effort Steering Actuator (LD8/L37)
(4)Power Steering Rack
(5)Steering Column Assembly
Figure 13:

Behind the Front Grille
Object Number: 1707790 Size: LF
(1)Ambient Air Temperature Sensor