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
G302 - 1 of 2, G303, and G304
Figure 2:

Marker and Front Park Lamps


Object Number: 1332429  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Clearance, License, and Rear Park Lamps
Park Lamp Relay
Park Lamp Relay
RR FOG, LR PARK, TR PARK, RR PARK, F PARK, LGM #2 Fuses, and RR WIPER Circuit Breaker
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: 1332430  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
Backup Lamps
Chassis and License Lamp Harnesses
Right Turn Signals
Right Turn Signals
Backup Lamps
G401, G402, and G403 - Except XUV
G401, G402, and G403 - XUV
G401, G402, and G403 - Except XUV
G302 - 2 of 2
G302 - 2 of 2
G401, G402, and G403 - Except XUV
Figure 4:

Stop Lamps


Object Number: 1332431  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Turn Signal/Hazard Controls and Cornering Lamps
Clearance, License, and Rear Park Lamps
B+ Bus - Underhood Fuse Block
Trailer Wiring
Left Turn Signals
Clearance, License, and Rear Park Lamps
Backup Lamps
Left Turn Signals
Right Turn Signals
Clearance, License, and Rear Park Lamps
Right Turn Signals
Backup Lamps
G401, G402, and G403 - Except XUV
G401, G402, and G403 - XUV
G401, G402, and G403 - Except XUV
G401, G402, and G403 - Except XUV
Figure 5:

Turn Signal/Hazard Controls and Cornering Lamps


Object Number: 1332432  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Left Turn Signals
Stop Lamps
ACCY/RUN and RUN/START Bus Bars
IGN E, TBC IGN 1, BACKUP, BTSI, and TRLR B/U Fuses
B+ Bus - Underhood Fuse Block
Park Lamp Relay
RR FOG, LR PARK, TR PARK, RR PARK, F PARK, LGM #2 Fuses, and RR WIPER Circuit Breaker
IGN E, TBC IGN 1, BACKUP, BTSI, and TRLR B/U Fuses
G104, G105, and G107
G101, G103, G106, and G110
G102
G201 - 1 of 2
Figure 6:

Left Turn Signals


Object Number: 1332433  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Right Turn Signals
Turn Signal/Hazard Controls and Cornering Lamps
Marker and Front Park Lamps
Stop Lamps
Clearance, License, and Rear Park Lamps
Backup Lamps
Stop Lamps
Clearance, License, and Rear Park Lamps
G401, G402, and G403 - Except XUV
G104, G105, and G107
Figure 7:

Right Turn Signals


Object Number: 1332434  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
Stop Lamps
Clearance, License, and Rear Park Lamps
Backup Lamps
G101, G103, G106, and G110
G401, G402, and G403 - Except XUV
Figure 8:

Backup Lamps


Object Number: 1332435  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Trailer Wiring
Right Turn Signals
B+ Bus - Rear Fuse Block
Power, Ground, Data Link Connector, and SP205
04 S/T Utility Inside Rearview Mirror Schematics
04 S/T Utility Inside Rearview Mirror Schematics
Stop Lamps
Clearance, License, and Rear Park Lamps
Left Turn Signals
Stop Lamps
Clearance, License, and Rear Park Lamps
Right Turn Signals
G401, G402, and G403 - Except XUV
G401, G402, and G403 - Except XUV
G201 - 2 of 2, and G305
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
Park Lamp Relay
04 S/T Utility Shift Lock Control Schematics
Stop Lamps
G201 - 2 of 2, and G305