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

Headlights


Object Number: 1921682  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Control Module References
Daytime Running Lights
Figure 2:

Daytime Running Lights


Object Number: 1921684  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Control Module References
Headlights