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

DLC, Ground, MIL and Power


Object Number: 1416028  Size: FS
Master Electrical Component List
Engine Control Module Description
Control Module References
12 Volt and 5 Volt Reference Bussing
OBD II Symbol Description Notice
BCM Fuses; CLUSTER, DOOR LOCKS, INTERIOR LIGHTS, HVAC/PWR SND, ISRVM/HVAC, CRUISE SW
Fuse Block-Underhood Fuses; COOL FAN, AMP, HVAC, ABS, MRRTD, ECM/TCM, HORN, BATT2
Fuse Block-Underhood Fuses; ETC, O2 SEN, MAN TRANS, EMISSION, ODD INJ, EVEN INJ
BCM Fuses; HTD SEAT/WIPER, GMLAN DEVICES, ECM, SDM/PSIR SW, Fuse Block-Underhood Fuses; TCM/TRANS, ABS/MRRTD
Japan
Power, Ground and Wiper Motor
Class 2
GMLAN - A/T
GMLAN - M/T
Fuse Block-Underhood Fuses; COOL FAN, AMP, HVAC, ABS, MRRTD, ECM/TCM, HORN, BATT2
BCM Fuses; HTD SEAT/WIPER, GMLAN DEVICES, ECM, SDM/PSIR SW, Fuse Block-Underhood Fuses; TCM/TRANS, ABS/MRRTD
DLC, Ground, MIL and Power
G104 and G106
Figure 2:

12-Volt and 5-Volt Reference Bussing


Object Number: 1416068  Size: FS
Master Electrical Component List
Engine Control Module Description
Control Module References
Low Reference Bussing
DLC, Ground, MIL and Power
OBD II Symbol Description Notice
Figure 3:

Low Reference Bussing


Object Number: 1416071  Size: FS
Master Electrical Component List
Engine Control Module Description
Control Module References
Engine Data Sensors-Pressure, Temperature, MAF, VSS and Brake Travel
12 Volt and 5 Volt Reference Bussing
OBD II Symbol Description Notice
Figure 4:

Engine Data Sensors -- Pressure, Temperature, MAF, VSS and Brake Travel


Object Number: 1416074  Size: FS
Master Electrical Component List
Air Intake System Description
Control Module References
Engine Data Sensors-Oxygen Sensors
Low Reference Bussing
OBD II Symbol Description Notice
Fuse Block-Underhood Fuses; ETC, O2 SEN, MAN TRANS, EMISSION, ODD INJ, EVEN INJ
Fuse Block-Underhood Fuses; ETC, O2 SEN, MAN TRANS, EMISSION, ODD INJ, EVEN INJ
Hazard, Stop Lamps and Turn Signal Outputs
Gages
Manual Transmission Schematics
PNP, Solenoids, TFT and VSS
DLC, Ground, MIL and Power
G104 and G106
Figure 5:

Engine Data Sensors - Oxygen Sensors


Object Number: 1416078  Size: FS
Master Electrical Component List
Knock Sensor (KS) System Description
Control Module References
Engine Data Sensors-Electronic Throttle Controls
Engine Data Sensors-Pressure, Temperature, MAF, VSS and Brake Travel
OBD II Symbol Description Notice
Fuse Block-Underhood Fuses; ETC, O2 SEN, MAN TRANS, EMISSION, ODD INJ, EVEN INJ
Figure 6:

Engine Data Sensors -- Electronic Throttle Controls


Object Number: 1416083  Size: FS
Master Electrical Component List
Throttle Actuator Control (TAC) System Description
Control Module References
Ignition System - Bank 1
Engine Data Sensors-Oxygen Sensors
OBD II Symbol Description Notice
Figure 7:

Ignition System - Bank 1


Object Number: 1422348  Size: FS
Master Electrical Component List
Electronic Ignition (EI) System Description
Control Module References
Ignition System - Bank 2
Engine Data Sensors-Electronic Throttle Controls
OBD II Symbol Description Notice
Fuse Block-Underhood Fuses; ETC, O2 SEN, MAN TRANS, EMISSION, ODD INJ, EVEN INJ
Fuse Block-Underhood Fuses; ETC, O2 SEN, MAN TRANS, EMISSION, ODD INJ, EVEN INJ
G105 and G107
Figure 8:

Ignition System - Bank 2


Object Number: 1422350  Size: FS
Master Electrical Component List
Electronic Ignition (EI) System Description
Control Module References
Ignition Controls - CMP, KS and CKP Sensors
Ignition System - Bank 1
OBD II Symbol Description Notice
Fuse Block-Underhood Fuses; ETC, O2 SEN, MAN TRANS, EMISSION, ODD INJ, EVEN INJ
Fuse Block-Underhood Fuses; ETC, O2 SEN, MAN TRANS, EMISSION, ODD INJ, EVEN INJ
G105 and G107
Figure 9:

Ignition Controls - CMP, KS and CKP Sensors


Object Number: 1422351  Size: FS
Master Electrical Component List
Knock Sensor (KS) System Description
Control Module References
Fuel Controls - Fuel Injectors and Fuel Pump Controls
Ignition System - Bank 2
OBD II Symbol Description Notice
Gages
Engine Controls Schematic Icons
Figure 10:

Fuel Controls - Fuel Injectors and Fuel Pump Controls


Object Number: 1422352  Size: FS
Master Electrical Component List
Fuel System Description
Control Module References
Fuel Controls - EVAP Controls
Ignition Controls - CMP, KS and CKP Sensors
OBD II Symbol Description Notice
Fuse Block-Underhood Fuses; ETC, O2 SEN, MAN TRANS, EMISSION, ODD INJ, EVEN INJ
Fuse Block-Underhood Fuses; ETC, O2 SEN, MAN TRANS, EMISSION, ODD INJ, EVEN INJ
Fuse Block-Underhood Bussing
G102
Gages
G102
G302, G401 and G402
Figure 11:

Fuel Controls - EVAP Controls


Object Number: 1422353  Size: FS
Master Electrical Component List
Fuel System Description
Control Module References
Controlled/Monitored Subsystem References
Fuel Controls - Fuel Injectors and Fuel Pump Controls
OBD II Symbol Description Notice
Fuse Block-Underhood Fuses; ETC, O2 SEN, MAN TRANS, EMISSION, ODD INJ, EVEN INJ
Fuse Block-Underhood Fuses; COOL FAN, AMP, HVAC, ABS, MRRTD, ECM/TCM, HORN, BATT2
Fuse Block-Underhood Fuses; ETC, O2 SEN, MAN TRANS, EMISSION, ODD INJ, EVEN INJ
Fuse Block-Underhood Fuses; COOL FAN, AMP, HVAC, ABS, MRRTD, ECM/TCM, HORN, BATT2
Low Reference Bussing
Figure 12:

Controlled/Monitored Subsystem References


Object Number: 1422354  Size: FS
Master Electrical Component List
Engine Control Module Description
Control Module References
Fuel Controls - EVAP Controls
OBD II Symbol Description Notice
Cranking (2of2)
Cranking (1of2)
Compressor Controls
Engine Cooling Schematics
Messages
Gages