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

Fuse Block 1, EXT LIGHTING, GENERATOR/CHASSIS, WIPER/HVAC Fuses


Object Number: 778493  Size: FS
Master Electrical Component List
Fuse Block 1, BRK BOOST MTR, COMPUTER/PRK BRK/ENG CONTROL, AUX Fuses
Fuse Block 1, BRK BOOST MTR, COMPUTER/PRK BRK/ENG CONTROL, AUX Fuses
Fuse Block 1, BRK BOOST MTR, COMPUTER/PRK BRK/ENG CONTROL, AUX Fuses
Fuse Block 2, 2-SPEED AXLE, HVAC, TURN SIGNAL, IGNITION, HYD ABS MODULE, AIR ABS RELAY, AIR ABS TRAILER RELAY Fuses
Figure 2:

Fuse Block 1, BRK BOOST MTR, COMPUTER/PRK BRK/ENG CONTROL, AUX Fuses


Object Number: 778500  Size: FS
Master Electrical Component List
Fuse Block 2, 2-SPEED AXLE, HVAC, TURN SIGNAL, IGNITION, HYD ABS MODULE, AIR ABS RELAY, AIR ABS TRAILER RELAY Fuses
Fuse Block 1, EXT LIGHTING, GENERATOR/CHASSIS, WIPER/HVAC Fuses
Fuse Block 1, EXT LIGHTING, GENERATOR/CHASSIS, WIPER/HVAC Fuses
Fuse Block 1, EXT LIGHTING, GENERATOR/CHASSIS, WIPER/HVAC Fuses
Figure 3:

Fuse Block 2, 2 SPEED AXLE, HVAC, TURN SIGNAL, IGNITION, HYD ABS MODULE, AIR ABS RELAY, AIR ABS TRAILER RELAY Fuses


Object Number: 778511  Size: FS
Master Electrical Component List
Ignition Switch, Igntion 3 Relay, Accessory Relay
Fuse Block 1, BRK BOOST MTR, COMPUTER/PRK BRK/ENG CONTROL, AUX Fuses
Fuse Block 1, EXT LIGHTING, GENERATOR/CHASSIS, WIPER/HVAC Fuses
Ignition Switch, Igntion 3 Relay, Accessory Relay
Ignition Switch, Igntion 3 Relay, Accessory Relay
Ignition Switch, Igntion 3 Relay, Accessory Relay
Figure 4:

Ignition Switch, Igniton 3 Relay, Accessory Relay


Object Number: 778534  Size: FS
Master Electrical Component List
IP Fuse Block, Circuit Breakers 1, 2, 3
Fuse Block 2, 2-SPEED AXLE, HVAC, TURN SIGNAL, IGNITION, HYD ABS MODULE, AIR ABS RELAY, AIR ABS TRAILER RELAY Fuses
Fuse Block 2, 2-SPEED AXLE, HVAC, TURN SIGNAL, IGNITION, HYD ABS MODULE, AIR ABS RELAY, AIR ABS TRAILER RELAY Fuses
Fuse Block 2, 2-SPEED AXLE, HVAC, TURN SIGNAL, IGNITION, HYD ABS MODULE, AIR ABS RELAY, AIR ABS TRAILER RELAY Fuses
Fuse Block 2, 2-SPEED AXLE, HVAC, TURN SIGNAL, IGNITION, HYD ABS MODULE, AIR ABS RELAY, AIR ABS TRAILER RELAY Fuses
G105, S323, S337, S339, S357, S358
G105, Splice Pack 5, S338
Figure 5:

IP Fuse Block, Circuit Breakers 1, 2, 3


Object Number: 778536  Size: FS
Master Electrical Component List
IP Fuse Block, Curcuit Breakers 4, 5, 10
Ignition Switch, Igntion 3 Relay, Accessory Relay
Figure 6:

IP Fuse BLock, Circuit Breakers 4, 5, 10


Object Number: 778539  Size: FS
Master Electrical Component List
IP Fuse Block, Curcuit Breaker 6, Page 1 of 2
IP Fuse Block, Circuit Breakers 1, 2, 3
Figure 7:

IP Fuse Block, Circuit Breaker 6, Page 1 of 2


Object Number: 778543  Size: FS
Master Electrical Component List
IP Fuse Block, Circuit Breaker 6, Page 2 of 2
IP Fuse Block, Curcuit Breakers 4, 5, 10
IP Fuse Block, Circuit Breaker 6, Page 2 of 2
Figure 8:

Circuit Breaker 6, Page 2 of 2


Object Number: 778546  Size: FS
Master Electrical Component List
IP Fuse Block, Circuit Breakers 7 and 8
IP Fuse Block, Curcuit Breaker 6, Page 1 of 2
IP Fuse Block, Curcuit Breaker 6, Page 1 of 2
Figure 9:

IP Fuse Block, Circuit Breakers 7, 8


Object Number: 778550  Size: FS
Master Electrical Component List
IP Fuse Block Circuit Breaker 9, Page 1 of 2
IP Fuse Block, Circuit Breaker 6, Page 2 of 2
Figure 10:

IP Fuse Block, Circuit Breaker 9, Page 1 of 2


Object Number: 778559  Size: FS
Master Electrical Component List
IP Fuse Block, Circuit Breaker 9, Page 2 of 2
IP Fuse Block, Circuit Breakers 7 and 8
IP Fuse Block, Circuit Breaker 9, Page 2 of 2
Figure 11:

Circuit Breaker 9, Page 2 of 2


Object Number: 778561  Size: FS
Master Electrical Component List
IP Fuse Block, Circuit Breakers 11, 12, 13, 14, 15
IP Fuse Block Circuit Breaker 9, Page 1 of 2
IP Fuse Block Circuit Breaker 9, Page 1 of 2
Figure 12:

IP Fuse Block, Circuit Breakers 11, 12, 13, 14, 15


Object Number: 778570  Size: FS
Master Electrical Component List
IP Fuse Block, Circuit Breakers 16, 18, 19, 20, 21
IP Fuse Block, Circuit Breaker 9, Page 2 of 2
Figure 13:

IP Fuse Block, Circuit Breakers 16, 18, 19, 20, 21


Object Number: 778572  Size: FS
Master Electrical Component List
IP Fuse Block, Circuit Breakers 22, 23, 24, 25, 26
IP Fuse Block, Circuit Breakers 11, 12, 13, 14, 15
Figure 14:

IP Fuse Block, Circuit Breakers 22, 23, 24, 25, 26


Object Number: 778575  Size: FS
Master Electrical Component List
IP Fuse Block, Circuit Breakers 16, 18, 19, 20, 21