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

B+ Bus - Underhood Fuse Block


Object Number: 1394473  Size: FS
Master Electrical Component List
Control Module References
B+ Bus - Body Fuse Block
B+ Bus - Body Fuse Block
Figure 2:

B+ Bus - Body Fuse Block


Object Number: 1394480  Size: FS
Master Electrical Component List
Control Module References
ABS, AUX PWR, BLOW, CAN VENT, CIGAR, IPC, PCM BAT, STOP LP and TRLR Fuses
B+ Bus - Underhood Fuse Block
B+ Bus - Underhood Fuse Block
Figure 3:

ABS, AUX PWR, BLOW, CAN VENT, CIGAR, IPC, PCM BAT, STOP LP and TRLR Fuses


Object Number: 1394512  Size: FS
Master Electrical Component List
Control Module References
FLASHER, RADIO/BAT, RFA, RR DEF/HTD MIR, TBC, TBC 2, TBC 3, TBC 4, TRL STOP/TRN Fuses and PWR SEAT Circuit Breaker
B+ Bus - Body Fuse Block
B+ Bus - Underhood Fuse Block
Figure 4:

FLASHER, RADIO BAT, RFA, RR DEF/HTD MIR, TBC, TBC 2, TBC 3, TBC 4, TRL STOP/TRN Fuses and PWR SEAT Circuit Breaker


Object Number: 1394518  Size: FS
Master Electrical Component List
Control Module References
LR STOP/TRN, LT DRL/TRN, RR STOP/TRN and RT DRL/TRN Fuses
ABS, AUX PWR, BLOW, CAN VENT, CIGAR, IPC, PCM BAT, STOP LP and TRLR Fuses
B+ Bus - Underhood Fuse Block
Figure 5:

LR STOP/TRN, LT DRL/TRN, RR STOP/TRN and RT DRL/TRN Fuses


Object Number: 1394602  Size: FS
Master Electrical Component List
Control Module References
DR TRN MIR, PASS TRN MIR and STOP/CHMSL Fuses
FLASHER, RADIO/BAT, RFA, RR DEF/HTD MIR, TBC, TBC 2, TBC 3, TBC 4, TRL STOP/TRN Fuses and PWR SEAT Circuit Breaker
Figure 6:

DR TRN MIR, PASS TRN MIR and STOP/CHMSL Fuses


Object Number: 1394609  Size: FS
Master Electrical Component List
Control Module References
AUXILIARY 1, OSRVM, RR BLOWER and SPARE Fuses
LR STOP/TRN, LT DRL/TRN, RR STOP/TRN and RT DRL/TRN Fuses
Figure 7:

AUXILIARY 1, OSRVM, RR BLOWER and SPARE Fuses


Object Number: 1394551  Size: FS
Master Electrical Component List
Control Module References
DOME FLUORESCENT WORK LAMPS and PANEL ACTUATORS Fuses
DR TRN MIR, PASS TRN MIR and STOP/CHMSL Fuses
B+ Bus - Body Fuse Block
DOME FLUORESCENT WORK LAMPS and PANEL ACTUATORS Fuses
Figure 8:

DOME FLUORESCENT WORK LAMPS and PANEL ACTUATOR Fuses


Object Number: 1394617  Size: FS
Master Electrical Component List
Control Module References
Ignition Switch - ACCY/RUN, RUN/START Bus Bars and IGN B Fuse
AUXILIARY 1, OSRVM, RR BLOWER and SPARE Fuses
AUXILIARY 1, OSRVM, RR BLOWER and SPARE Fuses
Figure 9:

Ignition Switch - ACCY/RUN, RUN/START Bus Bars and IGN B Fuse


Object Number: 1394498  Size: FS
Master Electrical Component List
Control Module References
Ignition Switch - ACCY/RUN, RUN/START Bus Bars and IGN A Fuse
DOME FLUORESCENT WORK LAMPS and PANEL ACTUATORS Fuses
B+ Bus - Underhood Fuse Block
Figure 10:

Ignition Switch - ACCY/RUN/START, RUN, START Bus Bars and IGN A Fuse


Object Number: 1394487  Size: FS
Master Electrical Component List
Control Module References
BTSI, BTSI/BU, O2A, O2B, PCM IGN 1, SPARE and TRLR BU Fuses
Ignition Switch - ACCY/RUN, RUN/START Bus Bars and IGN B Fuse
B+ Bus - Underhood Fuse Block
B+ Bus - Underhood Fuse Block
Figure 11:

BTSI, BTSI/BU, O2A, O2B, PCM IGN 1, SPARE and TRLR BU Fuses


Object Number: 1394508  Size: FS
Master Electrical Component List
Control Module References
IGN E, ISRV, SIR, SPARE andTBC IGN 1 Fuses
Ignition Switch - ACCY/RUN, RUN/START Bus Bars and IGN A Fuse
Ignition Switch - ACCY/RUN, RUN/START Bus Bars and IGN B Fuse
Figure 12:

IGN E, ISRV, SIR, SPARE and TBC IGN 1 Fuses


Object Number: 1394505  Size: FS
Master Electrical Component List
Control Module References
ENG 1 and ENG 2 Fuses - 4.3L
BTSI, BTSI/BU, O2A, O2B, PCM IGN 1, SPARE and TRLR BU Fuses
Ignition Switch - ACCY/RUN, RUN/START Bus Bars and IGN B Fuse
SIR Caution for Zoning
SIR Caution for Zoning
Figure 13:

ENG 1 and ENG 2 Fuses - 4.3L


Object Number: 1394506  Size: FS
Master Electrical Component List
Control Module References
ENG 1 and ENG 2 Fuses - 4.8L, 5.3L and 6.0L
IGN E, ISRV, SIR, SPARE andTBC IGN 1 Fuses
Ignition Switch - ACCY/RUN, RUN/START Bus Bars and IGN B Fuse
Figure 14:

ENG 1 and ENG 2 Fuses - 4.8L, 5.3L and 6.0L


Object Number: 1394507  Size: FS
Master Electrical Component List
Control Module References
BRKS, CRANK, FR WPR, HVAC, IGN 0 and TBC ACC Fuses
ENG 1 and ENG 2 Fuses - 4.3L
Ignition Switch - ACCY/RUN, RUN/START Bus Bars and IGN B Fuse
Figure 15:

BRKS, CRANK, FR WPR, HVAC, IGN 0 and TBC ACC Fuses


Object Number: 1394503  Size: FS
Master Electrical Component List
Control Module References
HVAC 1 Fuse
ENG 1 and ENG 2 Fuses - 4.8L, 5.3L and 6.0L
Ignition Switch - ACCY/RUN, RUN/START Bus Bars and IGN A Fuse
Figure 16:

HVAC 1 Fuse


Object Number: 1394502  Size: FS
Master Electrical Component List
Control Module References
LH HIBM, LH LOBM, RH HIBM, RH LOBM and SPARE Fuses
BRKS, CRANK, FR WPR, HVAC, IGN 0 and TBC ACC Fuses
Ignition Switch - ACCY/RUN, RUN/START Bus Bars and IGN A Fuse
Figure 17:

LH - HIBM, LH - LOBM, RH - HIBM, RH - LOBM and SPARE Fuses


Object Number: 1394543  Size: FS
Master Electrical Component List
Control Module References
FR PRK, LR PRK, RR PRK, TRLR PRK, UPFTR PRK Fuses and PWR WND Circuit Breaker
HVAC 1 Fuse
B+ Bus - Underhood Fuse Block
Figure 18:

FR PRK, LR PRK, RR PRK, TRLR PRK, UPFTR PRK Fuses and PWR WND Circuit Breaker


Object Number: 1394549  Size: FS
Master Electrical Component List
Control Module References
LH HIBM, LH LOBM, RH HIBM, RH LOBM and SPARE Fuses
B+ Bus - Body Fuse Block
SIR Caution for Zoning