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

Cell 100: Park Brake Indicator Switch, DRL, Ambient Light Sensor


Object Number: 478201  Size: FS
Ground Distribution Schematics
Ground Distribution Schematics
Fuse Block Schematics
Power Distribution Schematics
Power Distribution Schematics
Exterior Lights Schematics
Lighting Systems Components
Cell 100: Headlamp and Instrument Panel Lamp Dimmer Switch
Headlights Circuit Description
Brake Warning System Schematics
Instrument Cluster: Analog Schematics
Figure 2:

Cell 100: Headlamp and Instrument Panel Lamp Dimmer Switch


Object Number: 478202  Size: FS
Power Distribution Schematics
Exterior Lights Schematics
Fog Lights Schematics
Lighting Systems Components
Interior Lights Dimming Circuit Description
Handling ESD Sensitive Parts Notice
Cell 103
Cell 100: Headlamps
Cell 100: Headlamps
Figure 3:

Cell 100: Headlamps


Object Number: 478203  Size: FS
Handling ESD Sensitive Parts Notice
Ground Distribution Schematics
Ground Distribution Schematics
Lighting Systems Components
Headlights Circuit Description
Cell 100: Headlamp and Instrument Panel Lamp Dimmer Switch
Cell 100: Headlamp and Instrument Panel Lamp Dimmer Switch