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

Powertrain Control Module (PCM) Power and Ground


Object Number: 1847848  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Control Module References
EFI Relay S100
Air Pump, ETCS, Head, Alt S, EFI, Hazard EFT 2 Fuses
Air Pump, ETCS, Head, Alt S, EFI, Hazard EFT 2 Fuses
Air Pump, ETCS, Head, Alt S, EFI, Hazard EFT 2 Fuses
Air Pump, ETCS, Head, Alt S, EFI, Hazard EFT 2 Fuses
Air Pump, ETCS, Head, Alt S, EFI, Hazard EFT 2 Fuses
Fuel Injectors
Air Pump, ETCS, Head, Alt S, EFI, Hazard EFT 2 Fuses
Air Pump, ETCS, Head, Alt S, EFI, Hazard EFT 2 Fuses
Air Pump, ETCS, Head, Alt S, EFI, Hazard EFT 2 Fuses
Air Pump, ETCS, Head, Alt S, EFI, Hazard EFT 2 Fuses
G100, G101, G102
G100, G101, G102
Figure 2:

EFI Relay


Object Number: 1847849  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Control Module References
DLC
PCM Power and Ground
Air Pump, ETCS, Head, Alt S, EFI, Hazard EFT 2 Fuses
Figure 3:

Data Link Connector


Object Number: 1847850  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Control Module References
Fuel Sender Assembly
EFI Relay S100
Air Pump, ETCS, Head, Alt S, EFI, Hazard EFT 2 Fuses
Air Pump, ETCS, Head, Alt S, EFI, Hazard EFT 2 Fuses
Fuel Injectors
Air Pump, ETCS, Head, Alt S, EFI, Hazard EFT 2 Fuses
1 of 3
Air Pump, ETCS, Head, Alt S, EFI, Hazard EFT 2 Fuses
G100, G101, G102
1 of 3
1 of 3
Charge, Air Bag, Malfunction, O/D Off, Cruise Indicators
G100, G101, G102
Figure 4:

Fuel Sender Assembly


Object Number: 1847852  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Control Module References
Fuel Injectors
DLC
Air Pump, ETCS, Head, Alt S, EFI, Hazard EFT 2 Fuses
Air Pump, ETCS, Head, Alt S, EFI, Hazard EFT 2 Fuses
Fuel Injectors
Air Pump, ETCS, Head, Alt S, EFI, Hazard EFT 2 Fuses
Air Pump, ETCS, Head, Alt S, EFI, Hazard EFT 2 Fuses
Figure 5:

Fuel Injectors


Object Number: 1422201  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Control Module References
Ignition Coils
Fuel Sender Assembly
Air Pump, ETCS, Head, Alt S, EFI, Hazard EFT 2 Fuses
Air Pump, ETCS, Head, Alt S, EFI, Hazard EFT 2 Fuses
Figure 6:

Ignition Coils


Object Number: 1666794  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Control Module References
Accelerator Pedal Position (APP) Sensors
Fuel Injectors
Air Pump, ETCS, Head, Alt S, EFI, Hazard EFT 2 Fuses
Air Pump, ETCS, Head, Alt S, EFI, Hazard EFT 2 Fuses
Air Pump, ETCS, Head, Alt S, EFI, Hazard EFT 2 Fuses
Figure 7:

Accelerator Pedal Position (APP) Sensor


Object Number: 1470559  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Control Module References
EVAP System (FWD)
Ignition Coils
Air Pump, ETCS, Head, Alt S, EFI, Hazard EFT 2 Fuses
Figure 8:

EVAP System


Object Number: 1847855  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Control Module References
ECT Sensor, Fuel Tank Pressure (FTP) Sensor, TAC Module, A/C Resistor
Accelerator Pedal Position (APP) Sensors
PCM Power and Ground
Air Pump, ETCS, Head, Alt S, EFI, Hazard EFT 2 Fuses
Air Pump, ETCS, Head, Alt S, EFI, Hazard EFT 2 Fuses
Figure 9:

Idle Air Control Valve and EVAP System (AWD)


Object Number: 1666796  Size: FS
Master Electrical Component List
Evaporative Emission Control System Description
Control Module References
Engine Coolant Temperature (ECT) Sensor, Fuel Tank Pressure (FTP) Sensor, Throttle Actuator Control (TAC) Module (FWD)
EVAP System (FWD)
Engine Controls Schematic Icons
Air Pump, ETCS, Head, Alt S, EFI, Hazard EFI 2 Fuses
Air Pump, ETCS, Head, Alt S, EFI, Hazard EFI 2 Fuses
SP107, SP108, G104
S103, G103
S105, G105, G106, G107, G108
Figure 10:

Engine Coolant Temperature (ECT) Sensor, Fuel Tank Pressure (FTP) Sensor, Throttle Actuator Control (TAC) Module


Object Number: 1847856  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Control Module References
Mass Air Flow (MAF) Sensor
EVAP System (FWD)
Air Pump, ETCS, Head, Alt S, EFI, Hazard EFT 2 Fuses
Figure 11:

Engine Coolant Temperature (ECT) Sensor, A/C Resistor, Fuel Tank Pressure (FTP) Sensor, Throttle Position (TP) Sensor (AWD)


Object Number: 1666797  Size: FS
Master Electrical Component List
Fuel System Description
Control Module References
Mass Air Flow (MAF) Sensor
Engine Coolant Temperature (ECT) Sensor, Fuel Tank Pressure (FTP) Sensor, Throttle Actuator Control (TAC) Module (FWD)
Engine Controls Schematic Icons
Figure 12:

Mass Air Flow (MAF) Sensor


Object Number: 1847857  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Control Module References
KS, CMP Sensor, CKP Sensor, CMP Actuator Solenoid Valve
ECT Sensor, Fuel Tank Pressure (FTP) Sensor, TAC Module, A/C Resistor
Air Pump, ETCS, Head, Alt S, EFI, Hazard EFT 2 Fuses
Figure 13:

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


Object Number: 1847860  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Control Module References
HO2S (FWD)
Mass Air Flow (MAF) Sensor
G100, G101, G102
Figure 14:

Heated Oxygen Sensors (HO2S)


Object Number: 1424565  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Control Module References
Park/Neutral Position PNP Switch
KS, CMP Sensor, CKP Sensor, CMP Actuator Solenoid Valve
Air Pump, ETCS, Head, Alt S, EFI, Hazard EFT 2 Fuses
Air Pump, ETCS, Head, Alt S, EFI, Hazard EFT 2 Fuses
Air Pump, ETCS, Head, Alt S, EFI, Hazard EFT 2 Fuses
G100, G101, G102
Figure 15:

Heated Oxygen Sensors (HO2S) (AWD)


Object Number: 1666803  Size: FS
Master Electrical Component List
Control Module References
Park/Neutral Position Switch
Heated Oxygen Sensors (HO2S) (FWD)
Engine Controls Schematic Icons
Air Pump, ETCS, Head, Alt S, EFI, Hazard EFI 2 Fuses
Air Pump, ETCS, Head, Alt S, EFI, Hazard EFI 2 Fuses
S100
SP107, SP108, G104
S103, G103
SP107, SP108, G104
Figure 16:

Park/Neutral Position Switch, Brake Pressure Modulator Valve (BPMV), Multifunction Alarm Module


Object Number: 1847864  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Control Module References
VSS (FWD) w/o ABS
Park/Neutral Position PNP Switch
Figure 17:

Vehicle Speed Sensor (VSS)


Object Number: 1847870  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Control Module References
Automatic Transaxle Controls (FWD)
PNP Switch, BPMV, Multifunction Alarm Module
Air Pump, ETCS, Head, Alt S, EFI, Hazard EFT 2 Fuses
Air Pump, ETCS, Head, Alt S, EFI, Hazard EFT 2 Fuses
Air Pump, ETCS, Head, Alt S, EFI, Hazard EFT 2 Fuses
Air Pump, ETCS, Head, Alt S, EFI, Hazard EFT 2 Fuses
Air Pump, ETCS, Head, Alt S, EFI, Hazard EFT 2 Fuses
Air Pump, ETCS, Head, Alt S, EFI, Hazard EFT 2 Fuses
High Beam Door Open, ECT Indicators
High Beam Door Open, ECT Indicators
G100, G101, G102
Figure 18:

Automatic Transaxle Controls


Object Number: 1422223  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Control Module References
Overdrive (OD) Switch and Indicator Lamp
VSS (FWD) w/o ABS
Figure 19:

Automatic Transaxle Controls (AWD)


Object Number: 1666814  Size: FS
Master Electrical Component List
Control Module References
Overdrive Switch and Indicator
Automatic Transaxle Controls (FWD)
Engine Controls Schematic Icons
Engine Coolant Temperature (ECT) Sensor, A/C Resistor, Fuel Tank Pressure (FTP) Sensor, Throttle Position (TP) Sensor (AWD)
Figure 20:

Overdrive Switch and Indicator (A/T)


Object Number: 1666815  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Control Module References
PCM Idle-Up Inputs
Automatic Transaxle Controls (FWD)
Air Pump, ETCS, Head, Alt S, EFI, Hazard EFT 2 Fuses
Air Pump, ETCS, Head, Alt S, EFI, Hazard EFT 2 Fuses
Air Pump, ETCS, Head, Alt S, EFI, Hazard EFT 2 Fuses
Fuel Injectors
Charge, Air Bag, Malfunction, O/D Off, Cruise Indicators
G100, G101, G102
Figure 21:

Powertrain Control Module (PCM) Idle-Up Inputs


Object Number: 1847872  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Control Module References
Overdrive (OD) Switch and Indicator Lamp
Air Pump, ETCS, Head, Alt S, EFI, Hazard EFT 2 Fuses
Air Pump, ETCS, Head, Alt S, EFI, Hazard EFT 2 Fuses
Air Pump, ETCS, Head, Alt S, EFI, Hazard EFT 2 Fuses
Blower Controls
Defogger Schematics
Tail Relay, Turn Signal Headlamp Switch
Tail Relay, Turn Signal Headlamp Switch
Figure 22:

Park/Neutral Position Switch


Object Number: 1847862  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Control Module References
PNP Switch, BPMV, Multifunction Alarm Module
HO2S (FWD)
Air Pump, ETCS, Head, Alt S, EFI, Hazard EFT 2 Fuses
Air Pump, ETCS, Head, Alt S, EFI, Hazard EFT 2 Fuses
Air Pump, ETCS, Head, Alt S, EFI, Hazard EFT 2 Fuses
Air Pump, ETCS, Head, Alt S, EFI, Hazard EFT 2 Fuses
Air Pump, ETCS, Head, Alt S, EFI, Hazard EFT 2 Fuses
Starting and Charging Schematics
Backup Lamps