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

Headlamps


Object Number: 1429805  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Control Module References
Headlamp Switch
B+ Bus - Underhood Fuse Block
G108
Ambient Light/Sunload Sensor
G108
G104, G105, and G107
G101, G103, G106, and G110
Figure 2:

Headlamp Switch


Object Number: 1429807  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Control Module References
Headlamps
Headlamp Washer (CE4)
Courtesy Lamp Supply - 2 of 2
Courtesy Lamp Supply - 2 of 2
Interior Lamps Controls
Fog Lamps
I/P Dimming Supply - 2 of 2
G201 - 1 of 2
G102