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

Inputs


Object Number: 1784587  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Control Module References
Park Lamps
Power, Ground, Low Speed GMLAN
Fog Lamps Schematic
Dimmer Switch Inputs
G201 (1 of 2)
G109, G111, G203, G306
Figure 2:

Park Lamps


Object Number: 1784590  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Control Module References
Hazards, Turn Signals
Inputs
Headlights/DRL Schematics
G201 (1 of 2)
Underhood Fuse Block Fuses- LH HI BEAM, LH LO BEAM, PRK LPS, RH HI BEAM, RH LO BEAM
Backup Lamps
G401
G402, G403
G101, G102
G101, G102
Figure 3:

Hazards, Turn Signals


Object Number: 1784591  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Control Module References
Stop Lamps
Park Lamps
Power, Ground, Low Speed GMLAN
G101, G102
G101, G102
G401
G402, G403
G402, G403
Headlights/DRL Schematics
G101, G102
G101, G102
G401
G402, G403
G201 (1 of 2)
G109, G111, G203, G306
Figure 4:

Stop Lamps


Object Number: 1784593  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Control Module References
Backup Lamps
Hazards, Turn Signals
Body Control Module - AUDIO AMPLIFIER Fuse, BCM2 Fuse, CLUSTER Fuse, IGN SW Fuse, STOP LPS Fuse
G402, G403
G401
G402, G403
G401
Figure 5:

Backup Lamps


Object Number: 1784594  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Control Module References
Stop Lamps
Underhood Fuse Block Fuses- ABS, ABS2, BCK UP, CNSTR VENT, ECM/TRANS, EPS, HTD SEATS, IP IGN, LTR, MIR, PRK/NEUT, S-BAND/ONSTAR, and RUN/CRANK Relay
G401
G402, G403