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

Park Lamp Relay


Object Number: 1747631  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Control Module References
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: 1747632  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Control Module References
License and Rear Park Lamps
Park Lamp Relay
F PARK, LGM #2, LR PARK, RR FOG, RR PARK, TR PARK 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:

License and Rear Park Lamps


Object Number: 1747633  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Control Module References
Stop Lamps
Marker and Front Park Lamps
Park Lamp Relay
Left Turn Signals
Backup Lamps
Left Turn Signals
Right Turn Signals
Right Turn Signals
Backup Lamps
G401, G402, and G403
G401, G402, and G403
G401, G402, and G403
Figure 4:

Stop Lamps


Object Number: 1747636  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Control Module References
Turn Signal/Multifunction Switch and Cornering Lamps
License and Rear Park Lamps
B+ Bus - Underhood Fuse Block
Trailer Wiring - UY7
G401, G402, and G403
G401, G402, and G403
G401, G402, and G403
Figure 5:

Turn Signal/Multifunction Switch and Cornering Lamps


Object Number: 1747638  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Control Module References
Left Turn Signals
Stop Lamps
F PARK, LGM #2, LR PARK, RR FOG, RR PARK, TR PARK Fuses and RR WIPER Circuit Breaker
Park Lamp Relay
Ignition Switch - ACCY/RUN, RUN/START Bus Bars and IGN B Fuse
BCK/UP, BTSI, IGN E, TBC IGN 1, and TRLR BCK/UP Fuses
BCK/UP, BTSI, IGN E, TBC IGN 1, and TRLR BCK/UP Fuses
B+ Bus - Underhood Fuse Block
G104, G105, and G107
G101, G103, G106, and G110
G102
G201 - 1 of 2
Figure 6:

Left Turn Signals


Object Number: 1747642  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Control Module References
Right Turn Signals
Turn Signal/Multifunction Switch and Cornering Lamps
Marker and Front Park Lamps
Stop Lamps
License and Rear Park Lamps
Stop Lamps
Stop Lamps
License and Rear Park Lamps
G401, G402, and G403
G104, G105, and G107
Figure 7:

Right Turn Signals


Object Number: 1747643  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Control Module References
Backup Lamps
Left Turn Signals
Marker and Front Park Lamps
G101, G103, G106, and G110
Stop Lamps
License and Rear Park Lamps
Stop Lamps
G401, G402, and G403
License and Rear Park Lamps
Backup Lamps
Figure 8:

Backup Lamps


Object Number: 1747644  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Control Module References
Trailer Wiring - UY7
Right Turn Signals
B+ Bus - Rear Fuse Block
SP205
Inside Rearview Mirror Schematics
Stop Lamps
License and Rear Park Lamps
Left Turn Signals
G401, G402, and G403
Stop Lamps
License and Rear Park Lamps
Right Turn Signals
G401, G402, and G403
G201 - 2 of 2, and G305
Figure 9:

Trailer Wiring - UY7


Object Number: 1747646  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Control Module References
Backup Lamps
B+ Bus - Underhood Fuse Block
Ignition Switch - ACCY/RUN, RUN/START Bus Bars and IGN B Fuse
BCK/UP, BTSI, IGN E, TBC IGN 1, and TRLR BCK/UP Fuses
Park Lamp Relay
Stop Lamps
G201 - 1 of 2