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

Powertrain Control Module (PCM) Power and Ground


Object Number: 1422240  Size: FS
Master Electrical Component List
Control Module References
EFI Relay, S100
OBD II Symbol Description Notice
Horn, Dome, Main, Amp, Onstar Fuses
Ignition Switch (1 of 2)
Ignition Switch (2 of 2)
Ignition Switch (1 of 2)
S103 and G103
Ignition Switch (1 of 2)
S100
Air Pump, ETCS, Head, Alt S, EFI, EFI 2, Hazard Fuses
S100
SP107, SP108, G104
SP107, SP108, G104
S105, SP107, G105, G106, G107, G108
S105, SP107, G105, G106, G107, G108
SP201 and G201
Figure 2:

EFI Relay, S100


Object Number: 1422245  Size: FS
Master Electrical Component List
Control Module References
Data Link Connector
Powertrain Control Module (PCM) Power and Ground
OBD II Symbol Description Notice
Air Pump, ETCS, Head, Alt S, EFI, EFI 2, Hazard Fuses
S103 and G103
Figure 3:

Data Link Connector (DLC)


Object Number: 1422198  Size: FS
Master Electrical Component List
Control Module References
Fuel Sender Assembly
EFI Relay, S100
OBD II Symbol Description Notice
SIR Caution for Zoning
Power, AM 1, Door, Tail, P/Point, ECU-B, Stop, OBD, INV, Fuses
SP201 and G201
Junction Block - Instrument Panel Left
Figure 4:

Fuel Sender Assembly


Object Number: 1422249  Size: FS
Master Electrical Component List
Control Module References
Fuel Injectors
Data Link Connector
OBD II Symbol Description Notice
S103 and G103
Air Pump, ETCS, Head, Alt S, EFI, EFI 2, Hazard Fuses
S100
Ignition Switch (2 of 2)
Ignition Switch (2 of 2)
G202, G300, G301, G302
Figure 5:

Fuel Injectors


Object Number: 1422201  Size: FS
Master Electrical Component List
Control Module References
Ignition Coils
Fuel Sender Assembly
OBD II Symbol Description Notice
Ignition Switch (2 of 2)
Ignition Switch (2 of 2)
Figure 6:

Ignition Coils


Object Number: 1422203  Size: FS
Master Electrical Component List
Control Module References
AIR System
Fuel Injectors
OBD II Symbol Description Notice
Ignition Switch (2 of 2)
Ignition Switch (2 of 2)
Ignition Switch (2 of 2)
S105, SP107, G105, G106, G107, G108
S105, SP107, G105, G106, G107, G108
Figure 7:

AIR System


Object Number: 1422257  Size: FS
Master Electrical Component List
Control Module References
EVAP System
Ignition Coils
OBD II Symbol Description Notice
Ignition Switch (2 of 2)
Ignition Switch (2 of 2)
S100
Power, AM 1, Door, Tail, P/Point, ECU-B, Stop, OBD, INV, Fuses
S103 and G103
S105, SP107, G105, G106, G107, G108
S105, SP107, G105, G106, G107, G108
S105, SP107, G105, G106, G107, G108
Figure 8:

EVAP System


Object Number: 1422200  Size: FS
Master Electrical Component List
Control Module References
Idle Air Control Valve, Auxiliary Air Intake Solenoid
AIR System
OBD II Symbol Description Notice
S103 and G103
S100
Air Pump, ETCS, Head, Alt S, EFI, EFI 2, Hazard Fuses
S100
G202, G300, G301, G302
Figure 9:

Idle Air Control Valve, Auxiliary Intake Air Solenoid


Object Number: 1422252  Size: FS
Master Electrical Component List
Control Module References
ECT Sensor, A/C Resistor, EVAP Vacuum Leak Pump, Throttle Position (TP) Sensor
EVAP System
OBD II Symbol Description Notice
Air Pump, ETCS, Head, Alt S, EFI, EFI 2, Hazard Fuses
S100
S103 and G103
S105, SP107, G105, G106, G107, G108
S105, SP107, G105, G106, G107, G108
Figure 10:

Engine Coolant Temperature (ECT) Sensor, A/C Resistor, EVAP Vacuum Leak Pump, Throttle Position (TP) Sensor


Object Number: 1422265  Size: FS
Master Electrical Component List
Control Module References
Mass Air Flow (MAF) Sensor
Idle Air Control Valve, Auxiliary Air Intake Solenoid
OBD II Symbol Description Notice
Figure 11:

Mass Air Flow (MAF) Sensor


Object Number: 1422205  Size: FS
Master Electrical Component List
Control Module References
Knock Sensor (KS), Camshaft Position (CMP), Crankshaft Position (CKP) Sensors, Camshaft Position Actuator Solenoid
ECT Sensor, A/C Resistor, EVAP Vacuum Leak Pump, Throttle Position (TP) Sensor
OBD II Symbol Description Notice
S103 and G103
Air Pump, ETCS, Head, Alt S, EFI, EFI 2, Hazard Fuses
S100
Figure 12:

Knock Sensor (KS), Camshaft Position (CMP), Crankshaft Position (CKP) Sensors, Camshaft Position Actuator Solenoid Valve


Object Number: 1422207  Size: FS
Master Electrical Component List
Control Module References
Heated Oxygen Sensors (HO2S)
Mass Air Flow (MAF) Sensor
OBD II Symbol Description Notice
SP107, SP108, G104
SP107, SP108, G104
Figure 13:

Heated Oxygen Sensors (HO2S)


Object Number: 1422269  Size: FS
Master Electrical Component List
Control Module References
Vehicle Speed Signal
Knock Sensor (KS), Camshaft Position (CMP), Crankshaft Position (CKP) Sensors, Camshaft Position Actuator Solenoid
OBD II Symbol Description Notice
S103 and G103
SP107, SP108, G104
SP107, SP108, G104
Air Pump, ETCS, Head, Alt S, EFI, EFI 2, Hazard Fuses
S100
S100
Figure 14:

Vehicle Speed Signal


Object Number: 1422271  Size: FS
Master Electrical Component List
Control Module References
Rocker Arm Oil Control Valve and Rocker Arm Oil Pressure Switch
Heated Oxygen Sensors (HO2S)
OBD II Symbol Description Notice
Wash, RR Wip, Wiper, ECU-IG, Gauge, Heater, DEF Fuses
Junction Block - Instrument Panel Right
Fuel Gauge, Seat Belt Low Fuel Indicators, Passenger Sea Belt Warning Lamp
Horn, Dome, Main, Amp, Onstar Fuses
Horn, Dome, Main, Amp, Onstar Fuses
Horn, Dome, Main, Amp, Onstar Fuses
High Beam, Door Open, Fuel Indicators
Figure 15:

Rocker Arm Oil Control Valve and Rocker Arm Oil Pressure Switch


Object Number: 1422274  Size: FS
Master Electrical Component List
Control Module References
Powertrain Control Module (PCM) Idle-Up Inputs
Vehicle Speed Signal
OBD II Symbol Description Notice
Wash, RR Wip, Wiper, ECU-IG, Gauge, Heater, DEF Fuses
Junction Block - Instrument Panel Right
Fuel Gauge, Seat Belt Low Fuel Indicators, Passenger Sea Belt Warning Lamp
Figure 16:

Powertrain Control Module (PCM) Idle-Up Inputs


Object Number: 1422228  Size: FS
Master Electrical Component List
Control Module References
Rocker Arm Oil Control Valve and Rocker Arm Oil Pressure Switch
OBD II Symbol Description Notice
Power, AM 1, Door, Tail, P/Point, ECU-B, Stop, OBD, INV, Fuses
Park Lamps
Wash, RR Wip, Wiper, ECU-IG, Gauge, Heater, DEF Fuses
Wash, RR Wip, Wiper, ECU-IG, Gauge, Heater, DEF Fuses
Defogger Schematics
Blower Controls