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

Park Lamp Relay - Domestic


Object Number: 883210  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Park Lamp Relay - Export
B+ Bus Bar (Gas) - 1 of 3
Headlights/DRL Control
G203-1 of 3
G203-1 of 3
Figure 2:

Park Lamp Relay - Export


Object Number: 883213  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Front Park Lamps - Domestic
Park Lamp Relay - Domestic
B+ Bus Bar (Gas) - 1 of 3
Daytime Running Lamps (DRL) - Export
Headlights/DRL Control
G203-1 of 3
G203-1 of 3
Figure 3:

Front Park Lamps - Domestic


Object Number: 883215  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Front Park Lamps - Export
Park Lamp Relay - Export
left Turn Signals - Domestic - GMC
Park Lamp Relay - Domestic
Right Turn Signals - Domestic - GMC
G100, G101, G105
G100, G101, G105
G100, G101, G105
Figure 4:

Front Park Lamps - Export


Object Number: 883218  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Interior Park
Front Park Lamps - Domestic
S100-Export
G100, G101, G105
S101-Export
Figure 5:

Interior Park


Object Number: 883221  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Right Rear Park Lamps - GMC
Front Park Lamps - Export
Park Lamp Relay - Domestic
Interior Lights and LED Dimming Control
Trailer Wiring/Connector
G200-1 of 3
G200-2 of 3
Figure 6:

Right Rear Park Lamps - GMC


Object Number: 883224  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Right Rear Park Lamps - Chevrolet
Interior Park
Park Lamp Relay - Domestic
G302
G302
G403
G401, G402
Figure 7:

Right Rear Park Lamps - Chevrolet


Object Number: 1050159  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Left Rear Park Lamps - GMC
Right Rear Park Lamps - GMC
Park Lamp Relay - Domestic
Right Turn Signals - Domestic - Chevrolet
G302
G302
G403
G401, G402
Figure 8:

Left Rear Park Lamps - GMC


Object Number: 883226  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Left Rear Park Lamps - Chevrolet
Right Rear Park Lamps - Chevrolet
Park Lamp Relay - Domestic
G302
G302
G403
G401, G402
Figure 9:

Left Rear Park Lamps - Chevrolet


Object Number: 1049750  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Stop Lamps - GMC
Left Rear Park Lamps - GMC
Park Lamp Relay - Domestic
Left Turn Signals - Domestic - Chevrolet
G401, G402
G302
G403
G401, G402
Figure 10:

Stop Lamps - GMC


Object Number: 883229  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Stoplamps - Chevrolet
Left Rear Park Lamps - Chevrolet
B+ Bus Bar (Gas) - 1 of 3
CHMSL, STOP, LT TRLR, RT TRLR
CHMSL, STOP, LT TRLR, RT TRLR
G200-3 of 3
G200-3 of 3
Trailer Wiring/Connector
G200-1 of 3
G302
G403
G401, G402
G200-1 of 3
G200-1 of 3
Figure 11:

Stoplamps - Chevrolet


Object Number: 1076904  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Turn Signal Multifunction
Stop Lamps - GMC
B+ Bus Bar (Gas) - 1 of 3
CHMSL, STOP, LT TRLR, RT TRLR
CHMSL, STOP, LT TRLR, RT TRLR
Trailer Wiring/Connector
G200-3 of 3
G200-3 of 3
G200-1 of 3
G200-1 of 3
G200-1 of 3
G302
G403
G401, G402
Figure 12:

Turn Signal Multifunction


Object Number: 883234  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
left Turn Signals - Domestic - GMC
Stoplamps - Chevrolet
Ignition, Run, Start, Accy Bus Bar
IGN E
IGN E
G203-3 of 3
G203-1 of 3
G203-2 of 3
Figure 13:

Left Turn Signals - Domestic - GMC


Object Number: 883235  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
left Turn Signals - Export - GMC
Turn Signal Multifunction
Front Park Lamps - Domestic
G100, G101, G105
G302
G403
G401, G402
Figure 14:

Left Turn Signals - Export - GMC


Object Number: 883236  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Left Turn Signals - Domestic - Chevrolet
left Turn Signals - Domestic - GMC
S100-Export
G100, G101, G105
G302
G403
G401, G402
Figure 15:

Left Turn Signals - Domestic - Chevrolet


Object Number: 1076954  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Left Turn Signals - Export - Chevrolet
left Turn Signals - Export - GMC
Front Park Lamps - Domestic
G401, G402
G100, G101, G105
G302
G403
G401, G402
Figure 16:

Left Turn Signals - Export - Chevrolet


Object Number: 1076987  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Right Turn Signals - Domestic - GMC
Left Turn Signals - Domestic - Chevrolet
S100-Export
G100, G101, G105
G401, G402
G302
G403
G401, G402
Figure 17:

Right Turn Signals - Domestic - GMC


Object Number: 883238  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Right Turn Signals - Export - GMC
Left Turn Signals - Export - Chevrolet
Front Park Lamps - Domestic
G100, G101, G105
G302
G403
G401, G402
Figure 18:

Right Turn Signals - Export - GMC


Object Number: 883239  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Right Turn Signals - Domestic - Chevrolet
Right Turn Signals - Domestic - GMC
S101-Export
G100, G101, G105
G302
G403
G401, G402
Figure 19:

Right Turn Signals - Domestic - Chevrolet


Object Number: 1077017  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Right Turn Signals - Export - Chevrolet
Right Turn Signals - Export - GMC
Front Park Lamps - Domestic
G100, G101, G105
G401, G402
G302
G403
G401, G402
Figure 20:

Right Turn Signals - Export - Chevrolet


Object Number: 1077037  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Exterior Illumination Lamps
Right Turn Signals - Domestic - Chevrolet
S101-Export
G100, G101, G105
G401, G402
G302
G403
G401, G402
Figure 21:

Exterior Illumination Lamps


Object Number: 883241  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Backup Lamps - GMC
Right Turn Signals - Export - Chevrolet
SP205 - 1 of 2
Figure 22:

Backup Lamps - GMC


Object Number: 883246  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Backup Lamps - Chevrolet
Exterior Illumination Lamps
Ignition, Run, Start, Accy Bus Bar
Controlled/Monitored Subsystem References
Trailer Wiring/Connector
G401, G402
G302
G403
G401, G402
Power, Outside Air Temp, and Light Sensors
G403
Figure 23:

Backup Lamps - Chevrolet


Object Number: 1077119  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Trailer Wiring/Connector
Backup Lamps - GMC
Ignition, Run, Start, Accy Bus Bar
Controlled/Monitored Subsystem References
Trailer Wiring/Connector
G401, G402
G302
G403
G401, G402
G401, G402
G401, G402
Power, Outside Air Temp, and Light Sensors
G403
Figure 24:

Trailer Wiring/Connector


Object Number: 1093981  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Roof Beacon
Backup Lamps - Chevrolet
B+ Bus Bar (Gas) - 1 of 3
B+ Bus Bar (Gas) - 1 of 3
B+ Bus Bar (Gas) - 1 of 3
B+ Bus Bar (Gas) - 1 of 3
Interior Park
Stoplamps - Chevrolet
Stop Lamps - GMC
Backup Lamps - Chevrolet
Backup Lamps - GMC
G200-3 of 3
G200-1 of 3
G200-1 of 3
G403
G302
G401, G402
G200-1 of 3
Figure 25:

Roof Beacon


Object Number: 930927  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Trailer Wiring/Connector
B+ Bus Bar (Gas) - 1 of 3
Switch and Controls (w/AUO)
RTD/ECAS, RR WPR, EAP, SUNROOF, IPC/DIC, SEO 1
I/P Dimming Supply Voltage - 4 of 5
RTD/ECAS, RR WPR, EAP, SUNROOF, IPC/DIC, SEO 1
RTD/ECAS, RR WPR, EAP, SUNROOF, IPC/DIC, SEO 1
IGN 1 Relay Bus, SEO 2, RR DEFOG, SEO IGN, B/U LP
G200-1 of 3
G200-3 of 3
G200-1 of 3
G200-1 of 3
G304, G305