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

Headlamp Switch, Instrument Panel Cluster (IPC), and Doors


Object Number: 2080607  Size: FS
Master Electrical Component List
Interior Lighting Systems Description and Operation
Control Module References
Radio, HVAC Control Module, Driver Information Center (DIC) Switch, and Steering Wheel Controls
Fuse Block - Underhood Bussing
ONSTAR, INT LTS/PNL DIM, LT T/SIG, RT T/SIG, CHMSL/BCK-UP, INT LIGHTS, RVC SEN, and ECM/TCM Fuses
G202, and G204
G201
G301
G301
G301
G301
G302 (2 of 2)
G302 (2 of 2)
Figure 2:

Radio, HVAC Control Module, Driver Information Center (DIC) Switch, and Steering Wheel Controls


Object Number: 2080611  Size: FS
Master Electrical Component List
Interior Lighting Systems Description and Operation
Control Module References
Headlamp Switch, Instrument Panel Cluster (IPC) and Doors
Fuse Block - Underhood Bussing
ONSTAR, INT LTS/PNL DIM, LT T/SIG, RT T/SIG, CHMSL/BCK-UP, INT LIGHTS, RVC SEN, and ECM/TCM Fuses
Master Electrical Schematic Icons
G202, and G204
G201
G201