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

B+ Bus


Object Number: 1973312  Size: FS
Master Electrical Component List
AIRBAG (BATT), CLUSTER/THEFT, HVAC CTRL (BATT), IBCM1, IGN SENSOR, and RADIO Fuses
Figure 2:

AIRBAG (BATT), CLUSTER/THEFT, HVAC CTRL (BATT), IBCM1, IGN SENSOR, and RADIO Fuses


Object Number: 1973313  Size: FS
Master Electrical Component List
IGN I/II
B+ Bus
Figure 3:

IGN I/II


Object Number: 1977907  Size: FS
Master Electrical Component List
BCK/UP LAMPS, CIG/AUX, HTD MIR, HTD SEAT, RBEC 1, RKE/XM, RR DEFOG, and S/ROOF Fuses
AIRBAG (BATT), CLUSTER/THEFT, HVAC CTRL (BATT), IBCM1, IGN SENSOR, and RADIO Fuses
Figure 4:

BCK/UP LAMPS, CIG/AUX, HTD MIR, HTD SEAT, RBEC 1, RKE/XM, RR DEFOG, and S/ROOF Fuses


Object Number: 1973314  Size: FS
Master Electrical Component List
DRV SEAT, EMISSION 2, FUEL PUMP, HVAC BLOWER, HVAC CTRL (IGN), PRK LAMPS, PSG SEAT, RBEC 2, RUN RLY, and TRUNK Fuses
IGN I/II
Figure 5:

DRV SEAT, EMISSION 2, FUEL PUMP, HVAC BLOWER, HVAC CTRL (IGN), PRK LAMPS, PSG SEAT, RBEC 2, RUN RLY, and TRUNK Fuses


Object Number: 1973315  Size: FS
Master Electrical Component List
ABS, DRL, ECM, EPS, IBCM 1, IBCM 2, LT HIGH BEAM, LT LOW BEAM, RT HI BEAM, RT LOW BEAM, and TCM Fuses
BCK/UP LAMPS, CIG/AUX, HTD MIR, HTD SEAT, RBEC 1, RKE/XM, RR DEFOG, and S/ROOF Fuses
Figure 6:

ABS, DRL, ECM, EPS, IBCM 1, IBCM 2, LT HIGH BEAM, LT LOW BEAM, RT HI BEAM, RT LOW BEAM, and TCM Fuses


Object Number: 1973316  Size: FS
Master Electrical Component List
ABS, ECM IGN, IGN 1 ECM IGN BAS IGN, MAF INJECTORS BAS PUMPS, and TRANS Fuses
DRV SEAT, EMISSION 2, FUEL PUMP, HVAC BLOWER, HVAC CTRL (IGN), PRK LAMPS, PSG SEAT, RBEC 2, RUN RLY, and TRUNK Fuses
Figure 7:

A/C CLU, IGN MOD (without LY7) and INJ/COIL ODD (LY7) Fuses


Object Number: 1973318  Size: FS
Master Electrical Component List
Underhood Fuse Block, ABS, BASIGN (LAT), BAS PMPS (LAT), ECM IGN (without LZ4), ECM IGN (LZ4), MAF (LY7), TRANS Fuses
ABS, DRL, ECM, EPS, IBCM 1, IBCM 2, LT HIGH BEAM, LT LOW BEAM, RT HI BEAM, RT LOW BEAM, and TCM Fuses
Figure 8:

Underhood Fuse Block, ABS, BAS IGN (LAT), BAS PMPS (LAT), ECM IGN (without LZ4), ECM IGN (LZ4) MAF (LY7), TRANS Fuses


Object Number: 1973317  Size: FS
Master Electrical Component List
EMISSION 1, ETC, INJ COIL EVEN (LY7) INJECTORS (without LY7), and POST O2 Fuses
A/C CLU, IGN MOD, (Without LY7) and INJ/COIL ODD (LY7) Fuses
Figure 9:

EMISSION 1, ETC, INJ COIL EVEN (LY7) INJECTORS (without LY7), and POST O2 Fuses


Object Number: 1973319  Size: FS
Master Electrical Component List
DOOR LOCK, IBCM 2, INTERIOR LIGHTS, POWER WINDOWS, ROOF/HEAT SEAT, and WIPER SW Fuses
Underhood Fuse Block, ABS, BASIGN (LAT), BAS PMPS (LAT), ECM IGN (without LZ4), ECM IGN (LZ4), MAF (LY7), TRANS Fuses
Figure 10:

DOOR LOCK, IBCM 2, INTERIOR LIGHTS, POWER WINDOWS, ROOF/HEAT SEAT, and WIPER SW Fuses


Object Number: 1973320  Size: FS
Master Electrical Component List
AIR BAG (IGN), EPS, IBCM (RUN/CRANK) and RUN/CRANK Fuses
EMISSION 1, ETC, INJ COIL EVEN (LY7) INJECTORS (without LY7), and POST O2 Fuses
Figure 11:

AIR BAG (IGN), EPS, IBCM (RUN/CRANK) and RUN/CRANK Fuses


Object Number: 1973321  Size: FS
Master Electrical Component List
ONSTAR, PEDAL, and POWER MIRROR Fuses
DOOR LOCK, IBCM 2, INTERIOR LIGHTS, POWER WINDOWS, ROOF/HEAT SEAT, and WIPER SW Fuses
Figure 12:

ONSTAR, PEDAL, and POWER MIRRORS Fuses


Object Number: 1973322  Size: FS
Master Electrical Component List
AIR BAG (IGN), EPS, IBCM (RUN/CRANK) and RUN/CRANK Fuses