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

Headlamp Switch


Object Number: 755908  Size: FS
Master Electrical Component List
Interior Lighting Systems Description and Operation
ILLUM Fuse 12
AUX PWR, RDO BATT and HDLP SW Fuses
B+ Bus Bar
Headlamp Grounding Relay and BCM
Headlamp Switch, Ambient Light Sensor and BCM
Headlamp Switch, Ambient Light Sensor and BCM
G203 and G204 (Pickup)
Headlight Leveling Schematics
G203 and G204 (Pickup)
ILLUM and PARK LP Fuses
ILLUM Fuse 12
Figure 2:

ILLUM Fuse 12


Object Number: 755909  Size: FS
Master Electrical Component List
Interior Lighting Systems Description and Operation
Steering Wheel Controls
Headlamp Switch
Headlamp Switch
Steering Wheel Controls
Instrument Panel Cluster, BCM, and Automatic Transmission Indicators
Steering Wheel Controls
LED Dimming Signal
Instrument Panel Cluster, BCM, and Automatic Transmission Indicators
Instrument Panel Cluster, BCM, and Automatic Transmission Indicators
Input
G203 and G204 (Pickup)
Ignition Controls
Headlight Leveling Schematics
G203 and G204 (Pickup)
Figure 3:

Steering Wheel Controls


Object Number: 755910  Size: FS
Master Electrical Component List
Interior Lighting Systems Description and Operation
LED Dimming Signal
ILLUM Fuse 12
ILLUM Fuse 12
ILLUM Fuse 12
G200, G201 and G207 (Utility)
G200, G201 and G207 (Utility)
Figure 4:

LED Dimming Signal


Object Number: 794714  Size: FS
Master Electrical Component List
Interior Lighting Systems Description and Operation
Instrument Panel Cluster, BCM, and Automatic Transmission Indicators
Steering Wheel Controls
ILLUM Fuse 12
Figure 5:

Instrument Panel Cluster, BCM, and Automatic Transmission Indicators


Object Number: 755913  Size: FS
Master Electrical Component List
Interior Lighting Systems Description and Operation
LED Dimming Signal
ILLUM Fuse 12
ILLUM Fuse 12
ILLUM Fuse 12
Brake Switch Input (4.3L) and Tow/Haul Switch
G203 and G204 (Pickup)
Headlight Leveling Schematics
G203 and G204 (Pickup)
G200, G201 and G207 (Utility)
G200, G201 and G207 (Utility)
G200, G201 and G207 (Utility)