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

Cell 102: Headlamp Switch, Ambient Light Sensor and BCM


Object Number: 381862  Size: FS
Cell 10: AUX PWR, RDO BATT and HDLP SW Fuses
Cell 102: Headlamp Grounding Relay, Flash-To-Pass Switch and BCM
Lighting Systems Components
Headlights Circuit Description
Cell 102: DRL and Headlamp Power Relays
Cell 102: DRL and Headlamp Power Relays
Body Control System Connector End Views
Handling ESD Sensitive Parts Notice
Cell 110: PARK LP Fuse and Headlamp Switch
Cell 14: G203 and G204 (Pickup)
Cell 117: Headlamp Switch
Handling ESD Sensitive Parts Notice
Figure 2:

Cell 102: DRL and Headlamp Power Relays


Object Number: 381864  Size: FS
Cell 10: MIR/LKS, FOG LP Fuses and DRL, Headlamp Power Relays
Cell 14: G102 (Except Envoy)
Power and Grounding Connector End Views
Cell 102: Headlamp Grounding Relay, Flash-To-Pass Switch and BCM
Cell 102: Headlamp Grounding Relay, Flash-To-Pass Switch and BCM
Cell 102: Headlamp Grounding Relay, Flash-To-Pass Switch and BCM
Cell 102: Headlamp Grounding Relay, Flash-To-Pass Switch and BCM
Cell 102: Headlamp Grounding Relay, Flash-To-Pass Switch and BCM
Cell 102: Headlamp Grounding Relay, Flash-To-Pass Switch and BCM
Cell 14: G102 (Except Envoy)
Lighting Systems Components
Headlights Circuit Description
Cell 102: Headlamp Grounding Relay, Flash-To-Pass Switch and BCM
Cell 102: Headlamp Switch, Ambient Light Sensor and BCM
Figure 3:

Cell 102: Headlamp Grounding Relay, Flash-To-Pass Switch and BCM


Object Number: 381865  Size: FS
Power and Grounding Connector End Views
Cell 132
Cell 10: STUD 2, ABS, TBC and RR W/W Fuses
Cell 10: STUD 2, ABS, TBC and RR W/W Fuses
Lighting Systems Components
Headlights Circuit Description
Cell 102: Headlamp Switch and BCM (Envoy)
Cell 102: DRL and Headlamp Power Relays
Cell 110: PARK LP Fuse and Park Lamp Relay
Cell 102: Headlamp Switch, Ambient Light Sensor and BCM
Handling ESD Sensitive Parts Notice
Cell 102: DRL and Headlamp Power Relays
Cell 14: G200, G201 and G207 (Pickup)
Cell 102: DRL and Headlamp Power Relays
Cell 102: DRL and Headlamp Power Relays
Cell 102: DRL and Headlamp Power Relays
Cell 102: DRL and Headlamp Power Relays
Body Control System Connector End Views
Handling ESD Sensitive Parts Notice
Figure 4:

Cell 102: Headlamp Switch and BCM (Envoy)


Object Number: 381870  Size: FS
Cell 102: Headlamp Switch, Ambient Light Sensor and BCM
Cell 102: Park Lamp, High Beam Relays and BCM (Envoy)
Lighting Systems Components
Headlights Circuit Description
Cell 102: DRL, Low Beam Relays and BCM (Envoy)
Cell 102: Headlamp Grounding Relay, Flash-To-Pass Switch and BCM
Cell 102: DRL, Low Beam Relays and BCM (Envoy)
Body Control System Connector End Views
Handling ESD Sensitive Parts Notice
Cell 14: G203 and G204 (Envoy)
Cell 110: PARK LP Fuse and Headlamp Switch
Cell 117: Headlamp Switch
Handling ESD Sensitive Parts Notice
Figure 5:

Cell 102: DRL, Low Beam Relays and BCM (Envoy)


Object Number: 381872  Size: FS
Cell 102: Park Lamp, High Beam Relays and BCM (Envoy)
Cell 102: Park Lamp, High Beam Relays and BCM (Envoy)
Cell 14: G109, G111, G112 and G113
Handling ESD Sensitive Parts Notice
Body Control System Connector End Views
Handling ESD Sensitive Parts Notice
Cell 14: G102 (Envoy Only)
Caution
Cell 102: Headlamp Switch and BCM (Envoy)
Caution
Power and Grounding Connector End Views
Cell 10: IGN E Fuse and A/C Compressor, Rear Defogger, DRL Relays
Cell 10: HI BEAM, LD LEV, DRL Fuses and Low Beam Relay (Envoy Only)
Lighting Systems Components
Headlights Circuit Description
Cell 102: Park Lamp, High Beam Relays and BCM (Envoy)
Cell 102: Headlamp Switch and BCM (Envoy)
Figure 6:

Cell 102: Park Lamp, High Beam Relays and BCM (Envoy)


Object Number: 381873  Size: FS
Cell 102: DRL, Low Beam Relays and BCM (Envoy)
Cell 102: Headlamp Switch and BCM (Envoy)
Cell 102: DRL, Low Beam Relays and BCM (Envoy)
Body Control System Connector End Views
Handling ESD Sensitive Parts Notice
Cell 14: G200, G201 and G207 (Envoy)
Cell 14: G200, G201 and G207 (Envoy)
Cell 132
Power and Grounding Connector End Views
Cell 10: STUD 2, ABS, TBC and RR W/W Fuses
Lighting Systems Components
Headlights Circuit Description
Cell 102: DRL, Low Beam Relays and BCM (Envoy)
Cell 10: Ign RUN And START Buss Bar
Cell 10: STUD 2, ABS, TBC and RR W/W Fuses