GM Service Manual Online
For 1990-2009 cars only
Makes
🢒
GMC_Truck
🢒
2003
🢒
Jimmy - 4WD
🢒
Body and Accessories
🢒
Lighting Systems
🢒 Headlights/Daytime Running Lights (DRL) Schematics
Figure
1:
Headlamp Switch, Ambient Light Sensor and BCM
Master Electrical Component List
Exterior Lighting Systems Description and Operation
DRL and Headlamp Power Relays
B+ Bus Bar
Headlamp Grounding Relay and BCM
DRL and Headlamp Power Relays
G203 and G204 - Pickup
ILLUM, STG WHL ILLUM, and PARK LP Fuses
G203 and G204 - Pickup
G203 and G204 - Pickup
G203 and G204 - Pickup
Figure
2:
DRL and Headlamp Power Relays
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Headlamp Grounding Relay and BCM
Headlamp Switch, Ambient Light Sensor and BCM
MIR/LKS, FOG LP Fuses and DRL, Headlamp Power Relays
G102 - Except Export
Flash-To-Pass Switch, DRL Relay (ZR2) and BCM
Headlamp Switch, Ambient Light Sensor and BCM
Flash-To-Pass Switch, DRL Relay (ZR2) and BCM
Headlamp Grounding Relay and BCM
G102 - Except Export
Figure
3:
Headlamp Grounding Relay and BCM
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Flash-To-Pass Switch, DRL Relay (ZR2) and BCM
DRL and Headlamp Power Relays
B+ Bus Bar
Flash-To-Pass Switch, DRL Relay (ZR2) and BCM
Park Lamp Control
Headlamp Switch, Ambient Light Sensor and BCM
DRL and Headlamp Power Relays
G200, G201, G207, and G300- Pickup and Crew Cab
Figure
4:
Flash-To-Pass Switch, DRL Relay (ZR2) and BCM
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Headlamp Grounding Relay and BCM
STUD 2, ABS, HDLP W/W, TBC and RR W/W Fuses
B+ Bus Bar
Ign RUN and START Bus Bar
IGN E Fuse and A/C Compressor Clutch, Rear Window Defogger Relays
Headlamp Grounding Relay and BCM
DRL and Headlamp Power Relays
G102 - Except Export
G102 - Except Export
G102 - Except Export