GM Service Manual Online
For 1990-2009 cars only

Headlights Schematics Domestic

Figure 1:

Headlamp Switch, Ambient Light Sensor


Object Number: 576250  Size: FS
Lighting Systems Components
Headlights Circuit Description
Low Beam Headlamps
Instrument Panel Dimming
Dimming Control, IP Dimmer Switch
Temperature Sensors
Class 2 Serial Data Line (LH Drive)
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
G201
G201
G200 1 of 2
G200 1 of 2
Figure 2:

Low Beam Headlamps


Object Number: 576249  Size: FS
Lighting Systems Components
Headlights Circuit Description
DRL, High Beam Headlamps, Headlamp Dimmer Switch
Headlamp Switch, Ambient Light Sensor
Handling ESD Sensitive Parts Notice
HDHI BML, HDHI BMR, HDLO BML, and HDLO BMR Fuses
Class 2 Serial Data Line (LH Drive)
Power, Ground, and Components
DRL, High Beam Headlamps, Headlamp Dimmer Switch
DRL, High Beam Headlamps, Headlamp Dimmer Switch
G401 3 of 3
G401 3 of 3
Figure 3:

DRL, High Beam Headlamps, Headlamp Dimmer Switch


Object Number: 576246  Size: FS
Lighting Systems Components
Headlights Circuit Description
A/C CLU, FOG/DRL, INJR 1 and INJR 2 Fuses
A/C CLU, FOG/DRL, INJR 1 and INJR 2 Fuses
HDHI BML, HDHI BMR, HDLO BML, and HDLO BMR Fuses
Low Beam Headlamps
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
Low Beam Headlamps
G104
G401 3 of 3
G200 1 of 2
Low Beam Headlamps
Class 2 Serial Data Line (LH Drive)

Headlights Schematics Europe/Japan

Figure 1:

Headlamp Switch, Ambient Light Sensor


Object Number: 576244  Size: FS
Lighting Systems Components
Headlights Circuit Description
Low Beam Headlamps
Handling ESD Sensitive Parts Notice
Instrument Panel Dimming
Headlamp Switch, PRK LP Relay
Dimming Control, IP Dimmer Switch
Class 2 Serial Data Line (LH Drive)
Temperature Sensors
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
G201
G201
G200 1 of 2
G200 1 of 2
Figure 2:

Low Beam Headlamps


Object Number: 576242  Size: FS
Lighting Systems Components
Headlights Circuit Description
High Beam Headlamps, Headlamp Dimmer Switch
Headlamp Switch, Ambient Light Sensor
Handling ESD Sensitive Parts Notice
HDHI BML, HDHI BMR, HDLO BML, and HDLO BMR Fuses
Class 2 Serial Data Line (LH Drive)
Power, Ground, and Components
High Beam Headlamps, Headlamp Dimmer Switch
High Beam Headlamps, Headlamp Dimmer Switch
G401 3 of 3
G401 3 of 3
Figure 3:

High Beam Headlamps, Headlamp Dimmer Switch


Object Number: 576239  Size: FS
Lighting Systems Components
Headlights Circuit Description
Low Beam Headlamps
HDHI BML, HDHI BMR, HDLO BML, and HDLO BMR Fuses
Low Beam Headlamps
Low Beam Headlamps
Class 2 Serial Data Line (LH Drive)
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
G200 1 of 2
G401 3 of 3
G401 3 of 3
G104

Headlights Schematics Norway/Sweden

Figure 1:

Headlamp Switch, Ambient Light Sensor


Object Number: 576238  Size: FS
Lighting Systems Components
Headlights Circuit Description
DRL, Low Beam Headlamps
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
Instrument Panel Dimming
Headlamp Switch, PRK LP Relay
Dimming Control, IP Dimmer Switch
Temperature Sensors
Class 2 Serial Data Line (LH Drive)
Handling ESD Sensitive Parts Notice
G201
G201
G200 1 of 2
G200 1 of 2
Figure 2:

DRL, Low Beam Headlamps


Object Number: 575871  Size: FS
Lighting Systems Components
Headlights Circuit Description
High Beam Headlamps, Headlamp Dimmer Switch
Headlamp Switch, Ambient Light Sensor
Handling ESD Sensitive Parts Notice
HDHI BML, HDHI BMR, HDLO BML, and HDLO BMR Fuses
Headlamp Switch, PRK LP Relay
Class 2 Serial Data Line (LH Drive)
Power, Ground, and Components
High Beam Headlamps, Headlamp Dimmer Switch
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
RAP and Export LGT Fuses
RAP and Export LGT Fuses
High Beam Headlamps, Headlamp Dimmer Switch
G401 3 of 3
G401 3 of 3
Figure 3:

High Beam Headlamps, Headlamp Dimmer Switch


Object Number: 576237  Size: FS
Lighting Systems Components
Headlights Circuit Description
DRL, Low Beam Headlamps
HDHI BML, HDHI BMR, HDLO BML, and HDLO BMR Fuses
DRL, Low Beam Headlamps
Class 2 Serial Data Line (LH Drive)
DRL, Low Beam Headlamps
G200 1 of 2
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
G401 3 of 3
G401 3 of 3
G104