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

Hazard and Turn Signal


Object Number: 796071  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Park Lamps and Roof Marker Lamps
B+ Bus Bar
Ignition Switch - OFF/RUN/START, RUN/START and START Bus Bars
Stop Lamp Switch
TURN/BACKUP Fuse/Circuit Breaker
G101 - 1 of 2
Upfitter Connector
Upfitter Connector
Upfitter Connector
Upfitter Connector
Park Lamps and Roof Marker Lamps
Backup Lamps
G200, G202, and G203 - 1 of 4
Park Lamps and Roof Marker Lamps
G200, G202, and G203 - 1 of 4
Park Lamps and Roof Marker Lamps
Backup Lamps
Park Lamps and Roof Marker Lamps
G200, G202, and G203 - 1 of 4
G200, G202, and G203 - 1 of 4
Figure 2:

Park Lamps


Object Number: 796073  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Stop Lamp Switch
Hazard and Turn Signal
B+ Bus Bar
B+ Bus Bar
COURTESY, HVAC, ILLUM, LH PARK LP, LIGHTING, PARK, and RH PARK LP Fuses/Circuit Breakers - 1 of 2
Dome/Reading Lamps
Trailer Tow Connector (C6/C7/C8)
Trailer Tow Connector (C4/C5)
Upfitter Connector
Upfitter Connector
Upfitter Connector
Trailer Tow Connector (C6/C7/C8)
Hazard and Turn Signal
Hazard and Turn Signal
Hazard and Turn Signal
Hazard and Turn Signal
Backup Lamps
Backup Lamps
G101 - 1 of 2
G101 - 1 of 2
G102 - 1 of 2
G102 - 1 of 2
G203 - 2 of 4
G203 - 2 of 4
G203 - 2 of 4
G203 - 2 of 4
Figure 3:

Brake Switch


Object Number: 796074  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Backup Lamps
Park Lamps and Roof Marker Lamps
B+ Bus Bar
B+ Bus Bar
B+ Bus Bar
Upfitter Connector
BRAKE ISO Fuse/Circuit Breaker
G103 - 1 of 2, G105, and G106
Hazard and Turn Signal
Trailer Tow Connector (C6/C7/C8)
G103 - 1 of 2, G105, and G106
Figure 4:

Backup Lamps


Object Number: 1442495  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Trailer Tow Connector (C4/C5)
Stop Lamp Switch
B+ Bus Bar
Ignition Switch - OFF/RUN/START, RUN/START and START Bus Bars
TURN/BACKUP Fuse/Circuit Breaker
Upfitter Connector
Trailer Tow Connector (C4/C5)
Park Lamps and Roof Marker Lamps
Park Lamps and Roof Marker Lamps
G203 - 2 of 4
Figure 5:

Trailer Connector (C4/C5)


Object Number: 796076  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Trailer Tow Connector (C6/C7/C8)
Backup Lamps
B+ Bus Bar
Park Lamps and Roof Marker Lamps
Upfitter Connector
Backup Lamps
Upfitter Connector
G112, G113, G203 - 4 of 4, G204, G205, and G400
Figure 6:

Trailer Connector (C6/C7/C8)


Object Number: 796080  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Upfitter Connector
Trailer Tow Connector (C4/C5)
ABS 1, ABS 2, ABS 3, E/A PUMP, and HORN Fuses/Circuit Breakers
ABS 1, ABS 2, ABS 3, E/A PUMP, and HORN Fuses/Circuit Breakers
Park Lamps and Roof Marker Lamps
Upfitter Connector
Stop Lamp Switch
Upfitter Connector
Park Lamps and Roof Marker Lamps
G112, G113, G203 - 4 of 4, G204, G205, and G400
Figure 7:

Upfitter Connector


Object Number: 1464558  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Trailer Tow Connector (C6/C7/C8)
Hazard and Turn Signal
Hazard and Turn Signal
BATT/HAZ, HAZARD, PWR ACCY, STOP, and TRLR TRN/HAZ Fuses/Circuit Breakers
Hazard and Turn Signal
Hazard and Turn Signal
Park Lamps and Roof Marker Lamps
Stop Lamp Switch
Park Lamps and Roof Marker Lamps
Park Lamps and Roof Marker Lamps
Backup Lamps
AUX RLY and IGN 4 - I/P Fuse Block Fuses/Circuit Breakers
Trailer Tow Connector (C6/C7/C8)
Trailer Tow Connector (C6/C7/C8)
Trailer Tow Connector (C4/C5)
Trailer Tow Connector (C4/C5)
G103 - 1 of 2, G105, and G106
G103 - 1 of 2, G105, and G106
G200, G202, and G203 - 1 of 4