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

Dimmer Switch


Object Number: 1941817  Size: FS
Master Electrical Component List
Interior Lighting Systems Description and Operation
Control Module References
Lights
Figure 2:

Lights


Object Number: 1941823  Size: FS
Master Electrical Component List
Interior Lighting Systems Description and Operation
Control Module References
Dimmer Switch