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

Park Lamp Control, Turn Signal Inputs, and Hazard Switch


Object Number: 1775119  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Body Control Module Programming and Setup
Turn Signal Lamps
B+ Bus - Underhood Fuse Block
Ambient Light Sensor, Headlamp Controls and Switches
Ambient Light Sensor, Headlamp Controls and Switches
Inside Rearview Mirror, Dome Lamp, Footwell Lamps, and Cargo Lamp
Interior Lights Dimming Schematics
Interior Lights Dimming Schematics
Splice Pack SP106 and G106 - 1 of 2
Figure 2:

Turn Signal Lamps


Object Number: 1775124  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Body Control Module Programming and Setup
Park Lamps
Park Lamp Control, Turn Signal Inputs, and Hazard Switch
B+ Bus - Underhood Fuse Block
Splice Pack SP105 and G105 - 2 of 2
Splice Pack SP105 and G105 - 2 of 2
Splice Pack SP105 and G105 - 2 of 2
Splice Pack SP105 and G105 - 2 of 2
Splice Pack SP105 and G105 - 1 of 2
Splice Pack SP105 and G105 - 2 of 2
Figure 3:

Park Lamps


Object Number: 1775131  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Body Control Module Programming and Setup
Stop Lamps and License Lamps
Turn Signal Lamps
FR PK LP, RR PK LP, and RR PK LP2 Fuses
FR PK LP, RR PK LP, and RR PK LP2 Fuses
FR PK LP, RR PK LP, and RR PK LP2 Fuses
Splice Pack SP105 and G105 - 1 of 2
Splice Pack SP105 and G105 - 2 of 2
Splice Pack SP105 and G105 - 2 of 2
Splice Pack SP105 and G105 - 1 of 2
Splice Pack SP105 and G105 - 2 of 2
Splice Pack SP105 and G105 - 2 of 2
Figure 4:

Stop Lamps and License Lamps


Object Number: 1775142  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Body Control Module Programming and Setup
Backup Lamps
Park Lamps
B+ Bus - Underhood Fuse Block
FR PK LP, RR PK LP, and RR PK LP2 Fuses
FR PK LP, RR PK LP, and RR PK LP2 Fuses
Splice Pack SP105 and G105 - 1 of 2
Splice Pack SP105 and G105 - 2 of 2
Splice Pack SP105 and G105 - 2 of 2
Figure 5:

Backup Lamps


Object Number: 1775143  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Body Control Module Programming and Setup
Stop Lamps and License Lamps
B+ Bus - Underhood Fuse Block
RUN/CRANK RELAY BUS - 1 of 3, CRUISE, SIR, and TRANS Fuses
Splice Pack SP105 and G105 - 2 of 2
Splice Pack SP105 and G105 - 1 of 2
Splice Pack SP105 and G105 - 1 of 2