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

Fuse Block-Underhood Bus


Object Number: 1255274  Size: FS
Master Electrical Component List
Ignition Switch
Figure 2:

Ignition Switch


Object Number: 1255277  Size: FS
Master Electrical Component List
Fuse Block - Underhood Fuses: IPBATT1, IPBATT1A, BCM Fuses: (BCM (PWR), DASH, Lighter, Onstar, Park, PWR Outlet, PWR Windows, Radio (ACC), Radio (BATT1), Sunroof, and Wiper Sw
Fuse Block - Underhood BUS
Fuse Block - Underhood BUS
Fuse Block - Underhood Fuses: IPBATT2 and RUN (IGN3) BCM Fuses: BCM Elect, Cluster, Fuel Pump, HVAC, IGN SW, and Stop
Figure 3:

Fuse Block-Underhood Fuses: I/P BATT1 and I/P BATT1A, BCM Fuses: BCM PWR, DASH, LIGHTER, ONSTAR, PARK, PWR OUTLET, PWR WINDOWS, RADIO (ACC.), RADIO (BATT1), SUN ROOF, and WIPER


Object Number: 1255279  Size: FS
Master Electrical Component List
Fuse Block - Underhood Fuses: IPBATT2 and RUN (IGN3) BCM Fuses: BCM Elect, Cluster, Fuel Pump, HVAC, IGN SW, and Stop
Ignition Switch
Fuse Block - Underhood BUS
Figure 4:

Fuse Block-Underhood Fuses: I/P BATT2 and RUN (IGN3), BCM Fuses: BCM ELECT, CLUSTER, FUELPUMP, HVAC, IGN. SW, and STOP


Object Number: 1255284  Size: FS
Master Electrical Component List
Fuse Block - Underhood Fuses: ABS, ABS1, ABS2, ECM, ECM/TCM, IGN, LH HDLP, Prem Audio, RH HDLP, Run/Crank
Fuse Block - Underhood Fuses: IPBATT1, IPBATT1A, BCM Fuses: (BCM (PWR), DASH, Lighter, Onstar, Park, PWR Outlet, PWR Windows, Radio (ACC), Radio (BATT1), Sunroof, and Wiper Sw
Fuse Block - Underhood BUS
Figure 5:

Fuse Block-Underhood Fuses: ABS, ABS1, ABS2, ECM, ECM/TCM, IGN, LH HDLP, PREM AUDIO, RH HDLP, and RUN/CRANK


Object Number: 1255294  Size: FS
Master Electrical Component List
Fuse Block Underhood (2.0L)-ECM/ETC, IGN, Injectors, EMISS, Cooling Fan 2, and ECM
Fuse Block - Underhood Fuses: IPBATT2 and RUN (IGN3) BCM Fuses: BCM Elect, Cluster, Fuel Pump, HVAC, IGN SW, and Stop
Fuse Block - Underhood BUS
Fuse Block - Underhood Fuses: Backup, TRANS1, TRANS2
Fuse Block - Underhood Fuses: Backup, TRANS1, TRANS2
Figure 6:

Fuse Block Underhood (2.0L) - ECM/ETC, IGN, Injectors, EMISS, Cooling Fan 2, and ECM


Object Number: 1374662  Size: FS
Master Electrical Component List
Fuse Block - Underhood Fuses: Backup, TRANS1, TRANS2
Fuse Block - Underhood Fuses: ABS, ABS1, ABS2, ECM, ECM/TCM, IGN, LH HDLP, Prem Audio, RH HDLP, Run/Crank
Fuse Block - Underhood BUS
Figure 7:

Fuse Block-Underhood Fuses: BACK UP, TRANS1, and TRANS2


Object Number: 1255298  Size: FS
Master Electrical Component List
Fuse Block - Underhood Fuses: ERLS and Injectors, BCM Fuses: Air Bag, EPS
Fuse Block Underhood (2.0L)-ECM/ETC, IGN, Injectors, EMISS, Cooling Fan 2, and ECM
Fuse Block - Underhood Fuses: ABS, ABS1, ABS2, ECM, ECM/TCM, IGN, LH HDLP, Prem Audio, RH HDLP, Run/Crank
Fuse Block - Underhood Fuses: ERLS and Injectors, BCM Fuses: Air Bag, EPS
Fuse Block - Underhood Fuses: ABS, ABS1, ABS2, ECM, ECM/TCM, IGN, LH HDLP, Prem Audio, RH HDLP, Run/Crank
Figure 8:

Fuse Block-Underhood Fuses: ERLS and INJECTORS, BCM Fuses: AIR BAG, CRUISE, and EPS


Object Number: 1255301  Size: FS
Master Electrical Component List
Fuse Block - Underhood Fuses: Backup, TRANS1, TRANS2
Fuse Block - Underhood Fuses: Backup, TRANS1, TRANS2
SIR Caution for Zoning
SIR Caution for Zoning