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

Battery, Hyd Pump Fuse, Hyd Brake, Circuit Breaker, Hydraulic Brake Fuse (1 of 2)


Object Number: 648893  Size: FS
Master Electrical Component List
Interior Lighting Systems Description and Operation
Battery, Hyd Pump Fuse, Hyd Brake, Circuit Breaker, Hydraulic Brake Fuse (2 of 2)
Stop/Hazard Turn, IGN 3 Fuses
Generator Fuse, RDO, Washers/Wiper Circuit Breaker
Brake Warning System Schematics
Battery, Hyd Pump Fuse, Hyd Brake, Circuit Breaker, Hydraulic Brake Fuse (2 of 2)
Stop/Hazard Turn, IGN 3 Fuses
Figure 2:

Battery, Hyd Pump Fuse, Hyd Brake, Circuit Breaker, Hydraulic Brake Fuse (2 of 2)


Object Number: 769780  Size: FS
Master Electrical Component List
Interior Lighting Systems Description and Operation
Park Brake, Trans/Trlr, Trlr, PWDWDO/LKS, ABS Fuses
Battery, Hyd Pump Fuse, Hyd Brake, Circuit Breaker, Hydraulic Brake Fuse (1 of 2)
Battery, Hyd Pump Fuse, Hyd Brake, Circuit Breaker, Hydraulic Brake Fuse (1 of 2)
Park Brake, Trans/Trlr, Trlr, PWDWDO/LKS, ABS Fuses
Figure 3:

Park Brake, Trans/Trlr, Trlr, PWDWDO/LKS, ABS Fuses


Object Number: 769798  Size: FS
Master Electrical Component List
Interior Lighting Systems Description and Operation
Stop/Hazard Turn, IGN 3 Fuses
Battery, Hyd Pump Fuse, Hyd Brake, Circuit Breaker, Hydraulic Brake Fuse (2 of 2)
Battery, Hyd Pump Fuse, Hyd Brake, Circuit Breaker, Hydraulic Brake Fuse (2 of 2)
Figure 4:

Stop/Hazard Turn, IGN 3 Fuses


Object Number: 648896  Size: FS
Master Electrical Component List
Interior Lighting Systems Description and Operation
Interior/Exterior Lights/Headlamp, Aux Wrg IGN SW 1 Fuses
Park Brake, Trans/Trlr, Trlr, PWDWDO/LKS, ABS Fuses
Battery, Hyd Pump Fuse, Hyd Brake, Circuit Breaker, Hydraulic Brake Fuse (1 of 2)
Interior/Exterior Lights/Headlamp, Aux Wrg IGN SW 1 Fuses
Ignition Switch
Battery, Hyd Pump Fuse, Hyd Brake, Circuit Breaker, Hydraulic Brake Fuse (1 of 2)
Figure 5:

Interior/Exterior Lights/Headlamp, Aux Wrg IGN SW 1 Fuses


Object Number: 648897  Size: FS
Master Electrical Component List
Interior Lighting Systems Description and Operation
Ignition Switch
Stop/Hazard Turn, IGN 3 Fuses
Stop/Hazard Turn, IGN 3 Fuses
Ignition Switch
Figure 6:

Ignition Switch


Object Number: 648899  Size: FS
Master Electrical Component List
Interior Lighting Systems Description and Operation
Engine 1 Circuit Breaker
Interior/Exterior Lights/Headlamp, Aux Wrg IGN SW 1 Fuses
Interior/Exterior Lights/Headlamp, Aux Wrg IGN SW 1 Fuses
Stop/Hazard Turn, IGN 3 Fuses
Differential Lock Schematics
Air Brake Warning System
Figure 7:

Engine 1 Circuit Breaker


Object Number: 648900  Size: FS
Master Electrical Component List
Interior Lighting Systems Description and Operation
Eng 2, IGN RLY/VIM Circuit Breakers
Ignition Switch
Figure 8:

Eng 2, IGN RLY/VIM Circuit Breakers


Object Number: 769800  Size: FS
Master Electrical Component List
Interior Lighting Systems Description and Operation
ENG 3 Breakers
Engine 1 Circuit Breaker
ENG 3 Breakers
Figure 9:

ENG 3 Circuit Breakers


Object Number: 648901  Size: FS
Master Electrical Component List
Interior Lighting Systems Description and Operation
IGN SW Circuit Breakers (1 of 4)
Eng 2, IGN RLY/VIM Circuit Breakers
Eng 2, IGN RLY/VIM Circuit Breakers
Figure 10:

IGN SW Circuit Breakers (1 of 4)


Object Number: 769804  Size: FS
Master Electrical Component List
Interior Lighting Systems Description and Operation
IGN SW Circuit Breakers (2 of 4)
ENG 3 Breakers
Figure 11:

IGN SW Circuit Breakers (2 of 4)


Object Number: 648904  Size: FS
Master Electrical Component List
Interior Lighting Systems Description and Operation
IGN SW Circuit Breakers (3 of 4)
Power and Grounding Schematic Icons
IGN SW Circuit Breakers (1 of 4)
IGN SW Circuit Breakers (3 of 4)
Figure 12:

IGN SW Circuit Breakers (3 of 4)


Object Number: 648904  Size: FS
Master Electrical Component List
Interior Lighting Systems Description and Operation
IGN SW Circuit Breakers (4 of 4)
IGN SW Circuit Breakers (2 of 4)
IGN SW Circuit Breakers (2 of 4)
IGN SW Circuit Breakers (4 of 4)
Figure 13:

IGN SW Circuit Breakers (4 of 4)


Object Number: 648907  Size: FS
Master Electrical Component List
Interior Lighting Systems Description and Operation
B/U and IGN 3 Circuit Breaker (1 of 2)
IGN SW Circuit Breakers (3 of 4)
IGN SW Circuit Breakers (3 of 4)
Figure 14:

B/U and IGN 3 Circuit Breaker (1 of 2)


Object Number: 1430302  Size: FS
Master Electrical Component List
Interior Lighting Systems Description and Operation
B/U and IGN 3 Circuit Breaker (2 of 2)
IGN SW Circuit Breakers (4 of 4)
Crank, Circuit Breakers
B/U and IGN 3 Circuit Breaker (2 of 2)
B/U and IGN 3 Circuit Breaker (2 of 2)
B/U and IGN 3 Circuit Breaker (2 of 2)
Figure 15:

B/U and IGN 3 Circuit Breaker (2 of 2)


Object Number: 648911  Size: FS
Master Electrical Component List
Interior Lighting Systems Description and Operation
Crank, Circuit Breakers
B/U and IGN 3 Circuit Breaker (1 of 2)
B/U and IGN 3 Circuit Breaker (1 of 2)
B/U and IGN 3 Circuit Breaker (1 of 2)
B/U and IGN 3 Circuit Breaker (1 of 2)
Figure 16:

Crank, Circuit Breaker


Object Number: 1430303  Size: FS
Master Electrical Component List
Interior Lighting Systems Description and Operation
Blower, Horn, CIG/AUX Circuit Breakers
B/U and IGN 3 Circuit Breaker (2 of 2)
B/U and IGN 3 Circuit Breaker (1 of 2)
L18 Starting and Charging Circuits (Charging Circuit)
Figure 17:

Blower, Horn, CIG/AUX Circuit Breakers


Object Number: 648915  Size: FS
Master Electrical Component List
Interior Lighting Systems Description and Operation
Generator Fuse, RDO, Washers/Wiper Circuit Breaker
Crank, Circuit Breakers
Figure 18:

Generator Fuse, RDO, Washers/Wiper Circuit Breaker


Object Number: 648917  Size: FS
Master Electrical Component List
Interior Lighting Systems Description and Operation
Dome Panel, Park Lamp, MRR LP, Circuit Breakers
Blower, Horn, CIG/AUX Circuit Breakers
Battery, Hyd Pump Fuse, Hyd Brake, Circuit Breaker, Hydraulic Brake Fuse (1 of 2)
Figure 19:

Dome Panel, Park Lamp, MRR LP, Circuit Breakers


Object Number: 648918  Size: FS
Master Electrical Component List
Interior Lighting Systems Description and Operation
DR LK/WDO, DR LK, WDO PRK BRK AUX BATT, AUX IGN, Circuit Breakers
Generator Fuse, RDO, Washers/Wiper Circuit Breaker
Figure 20:

DR LK/WDO, DR LK, WDO PRK BRK AUX BATT, AUX IGN, Circuit Breakers


Object Number: 769806  Size: FS
Master Electrical Component List
Interior Lighting Systems Description and Operation
Stop, TRN/HAZ, Fuel Circuit Breakers
Dome Panel, Park Lamp, MRR LP, Circuit Breakers
Figure 21:

Stop, TRN/HAZ, Fuel Circuit Breakers


Object Number: 648921  Size: FS
Master Electrical Component List
Interior Lighting Systems Description and Operation
S142, (L18), S115 (LG5), S230
DR LK/WDO, DR LK, WDO PRK BRK AUX BATT, AUX IGN, Circuit Breakers
Figure 22:

CHAS, Axle, Circuit Breakers


Object Number: 648922  Size: FS
Master Electrical Component List
Interior Lighting Systems Description and Operation
Stop, TRN/HAZ, Fuel Circuit Breakers