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

Fuse Block - Underhood Bussing


Object Number: 1823301  Size: FS
Master Electrical Component List
Control Module References
Fuse Block - Left Rear Bussing
Figure 2:

Fuse Block - Left Rear Bussing


Object Number: 1823303  Size: FS
Master Electrical Component List
Control Module References
Fuse Block - Right Rear Bussing
Fuse Block Underhood Wiring Bussing
Fuse Block Underhood Wiring Bussing
Figure 3:

Fuse Block - Right Rear Bussing


Object Number: 1823306  Size: FS
Master Electrical Component List
Control Module References
Fuse Block - Underhood Relay/Fuses: Park Lamp Relay, Rt Park Fuses, Tilt/Lk/LMP/CLM Relay Coils Fuse
Fuse Block - Left Rear Bussing
Fuse Block Underhood Wiring Bussing
Figure 4:

Fuse Block - Underhood Relay/Fuses: PARK LAMP RELAY, RT PARK FUSE, TILT/LK/LMP/CLM RELAY COILS FUSE


Object Number: 1823308  Size: FS
Master Electrical Component List
Control Module References
Fuse Block - Underhood Fuses: LT PARK Fuse, License/Dimming Fuse
Fuse Block - Right Rear Bussing
Fuse Block Underhood Wiring Bussing
Fuse Block - Underhood Fuses: LT PARK Fuse, License/Dimming Fuse
Figure 5:

Fuse Block - Underhood Fuses: LT PARK FUSE, LICENSE/DIMMING FUSE


Object Number: 1823312  Size: FS
Master Electrical Component List
Control Module References
Fuse Block - Underhood Fuses/Relays: IPM/ALDL, Auto Headlamp Dimming, CCP, ECM/TCM, WPR MOD, WPR SW/VICS and Rain Sensor/HDLP Wash Fuses; ACC Relay
Fuse Block - Underhood Relay/Fuses: Park Lamp Relay, Rt Park Fuses, Tilt/Lk/LMP/CLM Relay Coils Fuse
Fuse Block - Underhood Relay/Fuses: Park Lamp Relay, Rt Park Fuses, Tilt/Lk/LMP/CLM Relay Coils Fuse
Figure 6:

Fuse Block - Underhood Fuses/Relay: IPM/ALDL, SMART BEAM, CCP, ECM/TCM, WPR MOD, WPR SW/VICS and RAIN SENSOR/HDLP WASH FUSES, ACCESSORY RELAY


Object Number: 1823582  Size: FS
Master Electrical Component List
Control Module References
Fuse Block - Underhood: Starter, RUN/CRANK Relays; Starter, Starter Relay, CCP, TCM/IPM/ECM, MAF, ABS and Washer Nozzle/ACC Fuses
Fuse Block - Underhood Fuses: LT PARK Fuse, License/Dimming Fuse
Fuse Block Underhood Wiring Bussing
Figure 7:

Fuse Block - Underhood: STARTER, IGN 1 Relays, STARTER, STARTER RELAY, CCP, TCM/IPM/ECM, MAF, ABS and WASHER NOZZLE/ACC FUSES


Object Number: 1823595  Size: FS
Master Electrical Component List
Control Module References
Fuse Block - Underhood: LOW BM, HIGH BEAM, POWER OUTLET and SPARE Relays, Volt Check, EBCM, LT LOW BEAM, RT LOW BEAM, LT HI BM, I/P OUTLET and OUTLET Fuses
Fuse Block - Underhood Fuses/Relays: IPM/ALDL, Auto Headlamp Dimming, CCP, ECM/TCM, WPR MOD, WPR SW/VICS and Rain Sensor/HDLP Wash Fuses; ACC Relay
Fuse Block Underhood Wiring Bussing
Figure 8:

Fuse Block - Underhood: LO BM, HI BEAM, POWER OUTLET and SPARE RELAYS, VOLT CHECK, EBCM, LT LO BEAM, RT LO BM, RT HI BM, LT HI BM, I/P OUTLET AND OUTLET Fuses


Object Number: 1823602  Size: FS
Master Electrical Component List
Control Module References
Fuse Block - Underhood: HUD, Front Blower, Comp Clutch, Fog Lamp, Horn Fuses, Hdlp Asher Circuit Breaker, Main Relay
Fuse Block - Underhood: Starter, RUN/CRANK Relays; Starter, Starter Relay, CCP, TCM/IPM/ECM, MAF, ABS and Washer Nozzle/ACC Fuses
Fuse Block Underhood Wiring Bussing
Figure 9:

Fuse Block - Underhood: HUD, FRONT BLOWER, COMP CLTCH, FOG LAMP, HORN Fuses, HDLP WASHER CIRCUIT BREAKER, MAIN RELAY


Object Number: 1823844  Size: FS
Master Electrical Component List
Control Module References
Fuse Block - Underhood: Main, Low Speed, Hi Speed, and S/P Fan Relays, V8 ECM, PRE O2/CAM, HFV6 ECM, Low Speed Fan, Hi Speed Fan Fuses
Fuse Block - Underhood: LOW BM, HIGH BEAM, POWER OUTLET and SPARE Relays, Volt Check, EBCM, LT LOW BEAM, RT LOW BEAM, LT HI BM, I/P OUTLET and OUTLET Fuses
Fuse Block Underhood Wiring Bussing
Figure 10:

Fuse Block - Underhood: Main, Low Speed, HI Speed and S/P Fan Relays; V8 ECM, PRE O2/CAM, HFV6 ECM, Low Speed Fan and HI Speed Fan Fuses


Object Number: 1823881  Size: FS
Master Electrical Component List
Control Module References
Fuse Block - Underhood: Odd Inj/Coils, Even Inj/Coils and Post O2 Fuses
Fuse Block - Underhood: HUD, Front Blower, Comp Clutch, Fog Lamp, Horn Fuses, Hdlp Asher Circuit Breaker, Main Relay
Fuse Block - Underhood: Odd Inj/Coils, Even Inj/Coils and Post O2 Fuses
Fuse Block Underhood Wiring Bussing
Figure 11:

Fuse Block - Underhood: ODD INJ/COILS, EVEN INJ/COILS and POST O2 FUSES


Object Number: 1823887  Size: FS
Master Electrical Component List
Control Module References
Fuse Block - Left Rear: TV/VICS, ELC SOL, ESC Module, DVR DR Module, Rear Door Module, Theft Shifter and Amp Fuses
Fuse Block - Underhood: Main, Low Speed, Hi Speed, and S/P Fan Relays, V8 ECM, PRE O2/CAM, HFV6 ECM, Low Speed Fan, Hi Speed Fan Fuses
Fuse Block - Underhood: Main, Low Speed, Hi Speed, and S/P Fan Relays, V8 ECM, PRE O2/CAM, HFV6 ECM, Low Speed Fan, Hi Speed Fan Fuses
Figure 12:

Fuse Block - Left Rear: TV/VICS, ELC SOL, ESC MODULE, DVR DR MODULE, REAR DOOR MODULE, THEFT/SHIFTER AND AMP FUSES


Object Number: 1823894  Size: FS
Master Electrical Component List
Control Module References
Fuse Block - Left Rear: Seats Circuit Breaker
Fuse Block - Underhood: Odd Inj/Coils, Even Inj/Coils and Post O2 Fuses
Fuse Block - Left Rear Bussing
Figure 13:

Fuse Block - Left Rear: Seats Circuit Breaker


Object Number: 1823903  Size: FS
Master Electrical Component List
Control Module References
Fuse Block - Left Rear - Ign 3 Relay, Ign 3, Rear Heated Seat, Memory, Airbag and Rear Shelf Speaker Fuses
Fuse Block - Left Rear: TV/VICS, ELC SOL, ESC Module, DVR DR Module, Rear Door Module, Theft Shifter and Amp Fuses
Fuse Block - Left Rear Bussing
Figure 14:

Fuse Block - Left Rear: IGN 3 RELAY, IGN 3, REAR HEATED SEAT, MEMORY, AIRBAG and REAR SHELF SPEAKER FUSES


Object Number: 1823956  Size: FS
Master Electrical Component List
Control Module References
Fuse Block - Right Rear - Radio/OnStar, Rt Turn Signal, Canister Vent, and RF Heated/Vented Seat Fuses, Window Motors Circuit Breaker
Fuse Block - Left Rear: Seats Circuit Breaker
Fuse Block - Left Rear Bussing
Fuse Block - Left Rear Bussing
Figure 15:

Fuse Block - Right Rear: RADIO/ONSTAR, RT TURN SIGNAL, CANISTER VENT and RF HEATED/VENTED SEAT Fuses, WINDOW MOTORS CIRCUIT BREAKER


Object Number: 1823968  Size: FS
Master Electrical Component List
Control Module References
Fuse Block - Right Rear - Lt Turn Signal, RIM 1, Rear Fog Lamp, Ft Pass Door Module, Htd Stg Clm, IGN 1, RIM 2 and Airbag Fuses, Rear Fog Lamp and Ign 1 Relays
Fuse Block - Left Rear - Ign 3 Relay, Ign 3, Rear Heated Seat, Memory, Airbag and Rear Shelf Speaker Fuses
Fuse Block - Right Rear Bussing
Fuse Block - Right Rear Bussing
Figure 16:

Fuse Block - Right Rear: LT TURN SIGNAL, RIM(1), REAR FOG LAMP, FT PASS. DOOR MODULE, HTD STG CLM, IGN 1, RIM(2) AND AIRBAG FUSES, REAR FOG LAMP AND IGN 1 RELAYS


Object Number: 1823971  Size: FS
Master Electrical Component List
Control Module References
Ignition Mode Switch
Fuse Block - Right Rear - Radio/OnStar, Rt Turn Signal, Canister Vent, and RF Heated/Vented Seat Fuses, Window Motors Circuit Breaker
Fuse Block - Right Rear Bussing
Figure 17:

Ignition Mode Switch


Object Number: 1823979  Size: FS
Master Electrical Component List
Control Module References
Power Modes
Fuse Block - Right Rear - Lt Turn Signal, RIM 1, Rear Fog Lamp, Ft Pass Door Module, Htd Stg Clm, IGN 1, RIM 2 and Airbag Fuses, Rear Fog Lamp and Ign 1 Relays
Figure 18:

Power Modes


Object Number: 1823986  Size: FS
Master Electrical Component List
Control Module References
Ignition Mode Switch