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

Power, Ground, MIL, and DLC


Object Number: 1558395  Size: FS
Master Electrical Component List
Electronic Ignition (EI) System Description
Control Module References
Engine Data Sensors - 5-volt Reference Bussing
Engine Controls Schematic Icons
Underhood Fuse Block - B+ Bus
Body Control Module - BCM 2, HVAC / PK3, CLUSTER, IGN SW, STOP LPS, and AMP Fuses
Body Control Module - BCM 2, HVAC / PK3, CLUSTER, IGN SW, STOP LPS, and AMP Fuses
High Speed GMLAN
Body Control Module - BCM 2, HVAC / PK3, CLUSTER, IGN SW, STOP LPS, and AMP Fuses
TCM Power and Ground
Underhood Fuse Block - B+ Bus
Underhood Fuse Block - B+ Bus
Body Control Module - RAP, DRIVERS DOOR UNLOCK PCB, DOOR UNLOCK PCB, DOOR LOCK PCB and INTERIOR LAMPS PCB Relays, RDO, PWR WINDW, DR LCK, INT LIGHT, ECM / TCM, SDM, S ROOF and SPARE Fuses
G103, G105, G017, and G108
G109
Body Control Module - RAP, DRIVERS DOOR UNLOCK PCB, DOOR UNLOCK PCB, DOOR LOCK PCB and INTERIOR LAMPS PCB Relays, RDO, PWR WINDW, DR LCK, INT LIGHT, ECM / TCM, SDM, S ROOF and SPARE Fuses
Body Control Module - RAP, DRIVERS DOOR UNLOCK PCB, DOOR UNLOCK PCB, DOOR LOCK PCB and INTERIOR LAMPS PCB Relays, RDO, PWR WINDW, DR LCK, INT LIGHT, ECM / TCM, SDM, S ROOF and SPARE Fuses
Figure 2:

Engine Data Sensors - 5-Volt Reference Bussing


Object Number: 1558397  Size: FS
Master Electrical Component List
Electronic Ignition (EI) System Description
Control Module References
Engine Data Sensors - Pressure, Temperature, and MAF/IAT
Power, Ground, MIL, and DLC
Engine Controls Schematic Icons
Figure 3:

Engine Data Sensors - Pressure, Temperature, and MAF/IAT


Object Number: 1558398  Size: FS
Master Electrical Component List
Engine Control Module Description
Control Module References
Engine Data Sensors - HO2S
Engine Data Sensors - 5-volt Reference Bussing
Engine Controls Schematic Icons
Underhood Fuse Block - LIFTGATE RELEASE, POWERTRAIN Relay, LIFTGATE / SUNROOF, EMISSION, INJ IGN MOD and ECM Fuses
Manual Transmission
G103, G105, G017, and G108
Figure 4:

Engine Data Sensors - HO2S


Object Number: 1558401  Size: FS
Master Electrical Component List
Engine Control Module Description
Control Module References
Engine Data Sensors - APP and TAC
Engine Data Sensors - Pressure, Temperature, and MAF/IAT
Engine Controls Schematic Icons
Underhood Fuse Block - LIFTGATE RELEASE, POWERTRAIN Relay, LIFTGATE / SUNROOF, EMISSION, INJ IGN MOD and ECM Fuses
Figure 5:

Engine Data Sensors - APP and TAC


Object Number: 1558402  Size: FS
Master Electrical Component List
Engine Control Module Description
Control Module References
Ignition Controls
Engine Data Sensors - HO2S
Engine Controls Schematic Icons
Figure 6:

Ignition Controls


Object Number: 1558403  Size: FS
Master Electrical Component List
Electronic Ignition (EI) System Description
Control Module References
Fuel Controls
Engine Data Sensors - APP and TAC
Engine Controls Schematic Icons
Underhood Fuse Block - LIFTGATE RELEASE, POWERTRAIN Relay, LIFTGATE / SUNROOF, EMISSION, INJ IGN MOD and ECM Fuses
Fuel Controls
Engine Controls Schematic Icons
Engine Controls Schematic Icons
G103, G105, G017, and G108
Figure 7:

Fuel Controls


Object Number: 1558404  Size: FS
Master Electrical Component List
Engine Control Module Description
Control Module References
EVAP Controls
Ignition Controls
Engine Controls Schematic Icons
Ignition Controls
Underhood Fuse Block - B+ Bus
G109
G402
G109
Figure 8:

EVAP Controls


Object Number: 1558406  Size: FS
Master Electrical Component List
Evaporative Emission Control System Description
Control Module References
Controlled/Monitored Subsystem References
Fuel Controls
Engine Controls Schematic Icons
Ambient Air Temperature Sensor, EOP Sensor, Fuel Level Sensor, and Indicators
Underhood Fuse Block - ABS (20A), CNSTR VENT, PWR OUTLET and MIR Fuses, PWR SEATS Circuit Breaker
Underhood Fuse Block - LIFTGATE RELEASE, POWERTRAIN Relay, LIFTGATE / SUNROOF, EMISSION, INJ IGN MOD and ECM Fuses
Figure 9:

Controlled/Monitored Subsystem References


Object Number: 1558407  Size: FS
Master Electrical Component List
Engine Control Module Description
Control Module References
EVAP Controls
Engine Controls Schematic Icons
Ambient Air Temperature Sensor, EOP Sensor, Fuel Level Sensor, and Indicators
Manual Transmission
Clutch Pedal Position Switch and Stop Lamp Switch
Engine Cooling
Compressor Controls
Charging
Starting and Charging Schematics