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

Headlamps


Object Number: 1885243  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Control Module References
Headlamp Switch
Figure 2:

Headlamp Switch


Object Number: 1885249  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Control Module References
Headlamps