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

Park Lamp Relay


Object Number: 1332428  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Marker and Front Park Lamps
B+ Bus - Rear Fuse Block
Headlamp Switch
G201 - 1 of 2
Figure 2:

Marker and Front Park Lamps


Object Number: 1350205  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Clearance, License, and Rear Park Lamps
Park Lamp Relay
RR FOG, LR PARK, RR PARK, F PARK, TR PARK, LGM #2 Fuses, and RR WIPER Circuit Breaker
Park Lamp Relay
Left Turn Signals
Right Turn Signals
G104, G105, and G107
G101, G103, G106, and G110
Figure 3:

Clearance, License, and Rear Park Lamps


Object Number: 1350206  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Stop Lamps
Marker and Front Park Lamps
Park Lamp Relay
Left Turn Signals
Right Turn Signals
G401, G402, and G403
G401, G402, and G403
G302 - 1 of 2, G303, and G304
G302 - 2 of 2
G401, G402, and G403
Figure 4:

Stop Lamps


Object Number: 1350208  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Turn Signal Multifunction
Clearance, License, and Rear Park Lamps
B+ Bus - Underhood Fuse Block
Trialer Wiring
Left Turn Signals
Clearance, License, and Rear Park Lamps
Right Turn Signals
Clearance, License, and Rear Park Lamps
G401, G402, and G403
G401, G402, and G403
G401, G402, and G403
Figure 5:

Turn Signal Multifunction


Object Number: 1350210  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Left Turn Signals
Stop Lamps
RR FOG, LR PARK, RR PARK, F PARK, TR PARK, LGM #2 Fuses, and RR WIPER Circuit Breaker
Park Lamp Relay
ACCY/RUN and RUN/START Bus Bars
IGN E, TBC IGN 1, BACKUP, BTSI, and TRLR B/U Fuses
IGN E, TBC IGN 1, BACKUP, BTSI, and TRLR B/U Fuses
B+ Bus - Underhood Fuse Block
G102
G201 - 1 of 2
Figure 6:

Left Turn Signals


Object Number: 1350212  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Right Turn Signals
Turn Signal Multifunction
Marker and Front Park Lamps
Stop Lamps
Clearance, License, and Rear Park Lamps
G401, G402, and G403
G104, G105, and G107
Figure 7:

Right Turn Signals


Object Number: 1359903  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Backup Lamps
Left Turn Signals
Marker and Front Park Lamps
Stop Lamps
Clearance, License, and Rear Park Lamps
G101, G103, G106, and G110
G401, G402, and G403
Figure 8:

Backup Lamps


Object Number: 1350214  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Trialer Wiring
Right Turn Signals
B+ Bus - Rear Fuse Block
Power, Ground, Data Link Connector, and SP205
G201 - 2 of 2, G305, and G306
Figure 9:

Trailer Wiring


Object Number: 1332436  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Backup Lamps
B+ Bus - Underhood Fuse Block
ACCY/RUN and RUN/START Bus Bars
IGN E, TBC IGN 1, BACKUP, BTSI, and TRLR B/U Fuses
B+ Bus - Rear Fuse Block
Stop Lamps
04 S/T Isuzu Shift Lock Control Schematics
G201 - 1 of 2
G401, G402, and G403