Headlights/Daytime Running Lights (DRL) Schematics. Chevrolet Blazer - 2WD 2003

GM Service Manual Online

For 1990-2009 cars only

Makes 🢒 Chevrolet 🢒 2003 🢒 Blazer - 2WD 🢒 Body and Accessories 🢒 Wiring 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