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
Air Pump, ETCS, Head, ALTS, EF1 Hazard EF2 Fuses
Air Pump, ETCS, Head, ALTS, EF1 Hazard EF2 Fuses
Air Pump, ETCS, Head, ALTS, EF1 Hazard EF2 Fuses
Air Pump, ETCS, Head, ALTS, EF1 Hazard EF2 Fuses
Air Pump, ETCS, Head, ALTS, EF1 Hazard EF2 Fuses
Fuel Injectors
Air Pump, ETCS, Head, ALTS, EF1 Hazard EF2 Fuses
Air Pump, ETCS, Head, ALTS, EF1 Hazard EF2 Fuses
Air Pump, ETCS, Head, ALTS, EF1 Hazard EF2 Fuses
Air Pump, ETCS, Head, ALTS, EF1 Hazard EF2 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
Data Link Connector
Powertrain Control Module (PCM) Power and Ground
Air Pump, ETCS, Head, ALTS, EF1 Hazard EF2 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
Air Pump, ETCS, Head, ALTS, EF1 Hazard EF2 Fuses
Air Pump, ETCS, Head, ALTS, EF1 Hazard EF2 Fuses
Fuel Injectors
Air Pump, ETCS, Head, ALTS, EF1 Hazard EF2 Fuses
1 of 3
Air Pump, ETCS, Head, ALTS, EF1 Hazard EF2 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
Data Link Connector
Air Pump, ETCS, Head, ALTS, EF1 Hazard EF2 Fuses
Air Pump, ETCS, Head, ALTS, EF1 Hazard EF2 Fuses
Fuel Injectors
Air Pump, ETCS, Head, ALTS, EF1 Hazard EF2 Fuses
Air Pump, ETCS, Head, ALTS, EF1 Hazard EF2 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, ALTS, EF1 Hazard EF2 Fuses
Air Pump, ETCS, Head, ALTS, EF1 Hazard EF2 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) Sensor
Fuel Injectors
Air Pump, ETCS, Head, ALTS, EF1 Hazard EF2 Fuses
Air Pump, ETCS, Head, ALTS, EF1 Hazard EF2 Fuses
Air Pump, ETCS, Head, ALTS, EF1 Hazard EF2 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
Ignition Coils
Air Pump, ETCS, Head, ALTS, EF1 Hazard EF2 Fuses
Figure 8:

EVAP System


Object Number: 1847855  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Control Module References
Engine Coolant Temperature (ECT) Sensor, Fuel Tank Pressure (FTP) Sensor, Throttle Actuator Control (TAC) Module
Accelerator Pedal Position (APP) Sensor
Powertrain Control Module (PCM) Power and Ground
Air Pump, ETCS, Head, ALTS, EF1 Hazard EF2 Fuses
Air Pump, ETCS, Head, ALTS, EF1 Hazard EF2 Fuses
Figure 9:

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
Air Pump, ETCS, Head, ALTS, EF1 Hazard EF2 Fuses
Figure 10:

Mass Air Flow (MAF) Sensor


Object Number: 1847857  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Control Module References
Knock Sensor (KS), Camshaft Position (CMP), Crankshaft Position (CKP) Sensors, Camshaft Position Actuator Solenoid Valve
Engine Coolant Temperature (ECT) Sensor, Fuel Tank Pressure (FTP) Sensor, Throttle Actuator Control (TAC) Module
Air Pump, ETCS, Head, ALTS, EF1 Hazard EF2 Fuses
Figure 11:

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
Heated Oxygen Sensors (HO2S)
Mass Air Flow (MAF) Sensor
G100, G101, G102
Figure 12:

Heated Oxygen Sensors (HO2S)


Object Number: 1424565  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Control Module References
Park/Neutral Position Switch
Knock Sensor (KS), Camshaft Position (CMP), Crankshaft Position (CKP) Sensors, Camshaft Position Actuator Solenoid Valve
Air Pump, ETCS, Head, ALTS, EF1 Hazard EF2 Fuses
Air Pump, ETCS, Head, ALTS, EF1 Hazard EF2 Fuses
Air Pump, ETCS, Head, ALTS, EF1 Hazard EF2 Fuses
G100, G101, G102
Figure 13:

Park/Neutral Position Switch


Object Number: 1847862  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Control Module References
Park/Neutral Position Switch, Brake Pressure Modulator Valve (BPMV), Multifunction Alarm Module
Heated Oxygen Sensors (HO2S)
Air Pump, ETCS, Head, ALTS, EF1 Hazard EF2 Fuses
Air Pump, ETCS, Head, ALTS, EF1 Hazard EF2 Fuses
Air Pump, ETCS, Head, ALTS, EF1 Hazard EF2 Fuses
Air Pump, ETCS, Head, ALTS, EF1 Hazard EF2 Fuses
Air Pump, ETCS, Head, ALTS, EF1 Hazard EF2 Fuses
Starting System
Backup Lamps
Figure 14:

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
Vehicle Speed Sensor (VSS)
Park/Neutral Position Switch
Figure 15:

Vehicle Speed Sensor (VSS)


Object Number: 1847870  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Control Module References
Automatic Transaxle Controls
Park/Neutral Position Switch, Brake Pressure Modulator Valve (BPMV), Multifunction Alarm Module
Air Pump, ETCS, Head, ALTS, EF1 Hazard EF2 Fuses
Air Pump, ETCS, Head, ALTS, EF1 Hazard EF2 Fuses
Air Pump, ETCS, Head, ALTS, EF1 Hazard EF2 Fuses
Air Pump, ETCS, Head, ALTS, EF1 Hazard EF2 Fuses
Air Pump, ETCS, Head, ALTS, EF1 Hazard EF2 Fuses
Air Pump, ETCS, Head, ALTS, EF1 Hazard EF2 Fuses
High Beam Door Open, ECT Indicators
High Beam Door Open, ECT Indicators
G100, G101, G102
Figure 16:

Automatic Transaxle Controls


Object Number: 1422223  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Control Module References
Overdrive Switch and Indicator Lamp
Vehicle Speed Sensor (VSS)
Figure 17:

Overdrive Switch and Indicator (A/T)


Object Number: 1666815  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Control Module References
Powertrain Control Module (PCM) Idle-Up Inputs
Automatic Transaxle Controls
Air Pump, ETCS, Head, ALTS, EF1 Hazard EF2 Fuses
Air Pump, ETCS, Head, ALTS, EF1 Hazard EF2 Fuses
Air Pump, ETCS, Head, ALTS, EF1 Hazard EF2 Fuses
Fuel Injectors
Charge, Air Bag, Malfunction, O/D Off, Cruise Indicators
G100, G101, G102
Figure 18:

Powertrain Control Module (PCM) Idle-Up Inputs


Object Number: 1847872  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Control Module References
Overdrive Switch and Indicator Lamp
Air Pump, ETCS, Head, ALTS, EF1 Hazard EF2 Fuses
Air Pump, ETCS, Head, ALTS, EF1 Hazard EF2 Fuses
Air Pump, ETCS, Head, ALTS, EF1 Hazard EF2 Fuses
Blower Controls
Defogger Schematics
Tail Relay, Turn Signal/Headlamp Switch
Tail Relay, Turn Signal/Headlamp Switch