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

Headlamp, Foglamp, and Ambient Light Sensor Inputs (w/C67)


Object Number: 765764  Size: FS
Master Electrical Component List
G200
Serial Data Class 2
Dimming Control
Temp Sensors w/CJ2
Headlamp, Foglamp, and Ambient Light Sensor Inputs (w/CJ2)
Figure 2:

Headlamp, Foglamp, and Ambient Light Sensor Inputs (w/CJ2)


Object Number: 765768  Size: FS
Master Electrical Component List
G200
Serial Data Class 2
Dimming Control
Serial Data Class 2
Temp Sensors w/CJ2
DRL Controls and High Beam Headlamps
Headlamp, Foglamp, and Ambient Light Sensor Inputs (w/C67)
Figure 3:

DRL Controls and High Beam Headlamps


Object Number: 765775  Size: FS
Master Electrical Component List
Battery Feed to the Fuse Block Underhood
Serial Data Class 2
Battery Feed to the Fuse Block Underhood
G103
G103
G401 (2 of 2)
G401 (2 of 2)
Fog Lamp and Headlamp Fuses and Relays (Fuse Block Underhood)
Low Beam Headlamps
Low Beam Headlamps
G200
Low Beam Headlamps
Headlamp, Foglamp, and Ambient Light Sensor Inputs (w/CJ2)
Figure 4:

Low Beam Headlamps


Object Number: 765779  Size: FS
Master Electrical Component List
DRL Controls and High Beam Headlamps
DRL Controls and High Beam Headlamps
G103
Fog Lamp and Headlamp Fuses and Relays (Fuse Block Underhood)
G401 (2 of 2)
G401 (2 of 2)
Power and Ground
DRL Controls and High Beam Headlamps