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

Underhood Fuse Block - B+ Bus


Object Number: 1609280  Size: FS
Master Electrical Component List
Control Module References
Underhood Fuse Block IBCM 1, Body Control Module (BCM), AIRBAG (BATT), CLUSTER/THEFT, HVAC CTRL (BATT), IGN SENSOR and RADIO Fuses
Figure 2:

Underhood Fuse Block - IBCM 1, Body Control Module (BCM), AIRBAG (BATT), CLUSTER/THEFT, HVAC CTRL (BATT), IGN SENSOR and RADIO Fuses


Object Number: 1609285  Size: FS
Master Electrical Component List
Control Module References
Underhood Fuse Block RBEC 1 Fuse and Rear Fuse Block AUDIO AMP, BACK UP LP, CIG/AUX, HTD ST, RKE/XM/DVD/VGD, RR DEFOG RR DEFOG and SUN RF Fuses
Underhood Fuse Block - B+
Underhood Fuse Block - B+
Power and Grounding Schematic Icons
Power and Grounding Schematic Icons
Figure 3:

Underhood Fuse Block RBEC 1 and Rear Fuse Block AUDIO AMP, BACK UP LP, CIG/AUX, HTD ST, RKE/XM/DVD/VGD, RR DEFOG and SUN RF Fuse


Object Number: 1609288  Size: FS
Master Electrical Component List
Control Module References
Underhood Fuse Block RBEC 2, RUN RLY, Body Control Module (BCM), HVAC BLOWER HIGH Relay, RUN Relay, HVAC BLOWER, HVAC CTRL (IGN) Rear Fuse Block FUEL Relay, PARK LP Relay, TRUNK Relay, DRV ST, EMISSIO
Underhood Fuse Block IBCM 1, Body Control Module (BCM), AIRBAG (BATT), CLUSTER/THEFT, HVAC CTRL (BATT), IGN SENSOR and RADIO Fuses
Underhood Fuse Block - B+
Figure 4:

Underhood Fuse Block RBEC 2, RUN RLY, Body Control Module (BCM), HVAC BLOWER HIGH Relay, RUN Relay, HVAC BLOWER, HVAC CTRL (IGN) Rear Fuse Block FUEL Relay, PARK LPS Relay, TRUNK Relay, DRV ST, EMISSION 2, FUEL, PARK LPS and TRUNK Fuses


Object Number: 1609291  Size: FS
Master Electrical Component List
Control Module References
Underhood Fuse Block DRL Relay, LO/BEAM Relay, HI/BEAM Relay, ABS, DRL, EPS, IBCM 1, IBCM 2, LT HI BEAM, LT LO BEAM, PCM, PWR WDO, CPE/CONV, RT HI BEAM, RT LOW BEAM, and TCM Fuses
Underhood Fuse Block RBEC 1 Fuse and Rear Fuse Block AUDIO AMP, BACK UP LP, CIG/AUX, HTD ST, RKE/XM/DVD/VGD, RR DEFOG RR DEFOG and SUN RF Fuses
Underhood Fuse Block - B+
Figure 5:

Underhood Fuse Block DRL Relay, LO/BEAM Relay, HI/BEAM Relay, ABS, DRL, , EPS, IBCM 1, IBCM 2, LT HI BEAM, LTH LOW BEAM, PCM, PWR WDO CPE/CONV, RT HI BEAM, RT LOW BEAM, and TCM Fuses


Object Number: 1609298  Size: FS
Master Electrical Component List
Control Module References
Underhood Fuse Block RUN/CRANK Relay, ABS, IGN 1, INJ, PCM IGN 1 and TRANS Fuses
Underhood Fuse Block RBEC 2, RUN RLY, Body Control Module (BCM), HVAC BLOWER HIGH Relay, RUN Relay, HVAC BLOWER, HVAC CTRL (IGN) Rear Fuse Block FUEL Relay, PARK LP Relay, TRUNK Relay, DRV ST, EMISSIO
Underhood Fuse Block - B+
Figure 6:

Underhood Fuse Block RUN/CRANK Relay, ABS, IGN 1, INJ, PCM IGN 1 and TRANS Fuses


Object Number: 1609302  Size: FS
Master Electrical Component List
Control Module References
Underhood Fuse Block A/C CLUTCH Relay, PWR/TRN Relay, A/C CLU, EMISSION 1, ETC, IGN MOD and IMTV/DOD Fuses
Underhood Fuse Block DRL Relay, LO/BEAM Relay, HI/BEAM Relay, ABS, DRL, EPS, IBCM 1, IBCM 2, LT HI BEAM, LT LO BEAM, PCM, PWR WDO, CPE/CONV, RT HI BEAM, RT LOW BEAM, and TCM Fuses
Underhood Fuse Block - B+
Underhood Fuse Block RUN RLY, IBCM (RUN/CRANK), Body Control Module (BCM) AIRBAG (IGN) EPS and RUN/CRANK Fuses
Figure 7:

Underhood Fuse Block A/C CLUTCH Relay, PWR/TRN Relay, A/C CLU, EMISSION 1, ETC, IGN MOD and IMTV/DOD Fuses


Object Number: 1609305  Size: FS
Master Electrical Component List
Control Module References
Underhood Fuse Block IBCM 2, Body Control Module (BCM) ACCESSORY Relay, DOOR LOCK, POWER WINDOWS, ROOF/HEAT SEAT and WPR SW Fuses
Underhood Fuse Block RUN/CRANK Relay, ABS, IGN 1, INJ, PCM IGN 1 and TRANS Fuses
Underhood Fuse Block - B+
Figure 8:

Underhood Fuse Block IBCM 2, Body Control Module (BCM) ACCESSORY Relay, DOOR LOCK, POWER WINDOWS, ROOF/HEAT SEAT and WIPER SW Fuses


Object Number: 1609307  Size: FS
Master Electrical Component List
Control Module References
Underhood Fuse Block RUN RLY, IBCM (RUN/CRANK), Body Control Module (BCM) AIRBAG (IGN) EPS and RUN/CRANK Fuses
Underhood Fuse Block RUN/CRANK Relay, ABS, IGN 1, INJ, PCM IGN 1 and TRANS Fuses
Underhood Fuse Block - B+
Body Control Module (BCM) INTERIOR LIGHTS, ONSTAR, PEDAL and POWER MIRRORS Fuses
Figure 9:

Underhood Fuse Block IBCM (RUN/CRANK) Body Control Module (BCM) AIRBAG (IGN), EPS and RUN/CRANK Fuses


Object Number: 1609311  Size: FS
Master Electrical Component List
Control Module References
Body Control Module (BCM) INTERIOR LIGHTS, ONSTAR, PEDAL and POWER MIRRORS Fuses
Underhood Fuse Block IBCM 2, Body Control Module (BCM) ACCESSORY Relay, DOOR LOCK, POWER WINDOWS, ROOF/HEAT SEAT and WPR SW Fuses
Underhood Fuse Block RUN/CRANK Relay, ABS, IGN 1, INJ, PCM IGN 1 and TRANS Fuses
Power and Grounding Schematic Icons
Power and Grounding Schematic Icons
Power and Grounding Schematic Icons
Power and Grounding Schematic Icons
Figure 10:

Body Control Module (BCM) INTERIOR LIGHTS, ONSTAR™, PEDAL and POWER MIRRORS Fuses


Object Number: 1609312  Size: FS
Master Electrical Component List
Control Module References
Underhood Fuse Block RUN RLY, IBCM (RUN/CRANK), Body Control Module (BCM) AIRBAG (IGN) EPS and RUN/CRANK Fuses
Underhood Fuse Block IBCM 2, Body Control Module (BCM) ACCESSORY Relay, DOOR LOCK, POWER WINDOWS, ROOF/HEAT SEAT and WPR SW Fuses