GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2003 🢒 Astro - 4WD 🢒 HVAC 🢒 HVAC Systems - Manual 🢒 Engine Controls Component Views
Figure 1:

Powertrain Control Module (PCM) Location View
Object Number: 786705 Size: LF
(1)Engine Harness
(2)Battery
(3)S154
(4)Powertrain Control Module (PCM) Connector C1
(5)Powertrain Control Module (PCM) Connector C2
(6)Powertrain Control Module (PCM)
(7)Fuel Pump Prime
Figure 2:

MAF, IAT, and Air Cleaner Assembly
Object Number: 241022 Size: LF
(1)Intake Air Temperature (IAT) Sensor
(2)Mass Air Flow (MAF) Sensor
(3)Air Cleaner Assembly
Figure 3:

Crankshaft Position (CKP) Sensor
Object Number: 235188 Size: MF
(1)Crankshaft
(2)Front Engine Cover
(3)Crankshaft Position (CKP) Sensor
Figure 4:

Throttle Position (TP) Sensor, Idle Air Control (IAC) Valve, and Camshaft Postion (CMP) Sensor
Object Number: 830503 Size: MF
(1)Throttle Position (TP) Sensor
(2)Idle Air Control (IAC) Valve
(3)Ignition Coil
(4)Evaporative Emission (EVAP) Canister Purge Solenoid
(5)Engine Oil Pressure (EOP) Sensor
(6)Knock Sensor (KS)
(7)Camshaft Postion (CMP) Sensor
(8)Fuel Pressure Connection Valve
Figure 5:

MAP, Purge Solenoid, and Throttle Body
Object Number: 786749 Size: SF
(1)Throttle Body
(2)Generator
(3)Evaporative Emission (EVAP) Canister Purge Solenoid
(4)Manifold Absolute Pressure (MAP) Sensor
Figure 6:

Engine Coolant Temperature (ECT) Sensor
Object Number: 235186 Size: MF
(1)Bank 1 Cylinder Head
(2)Engine Coolant Temperature (ECT) Sensor
Figure 7:

Engine Wiring, Right Side
Object Number: 582029 Size: LF
(1)S123
(2)Evaporative Emission (EVAP) Canister Purge Solenoid Connector
(3)Ignition Coil Connector
(4)Ignition Control Module (ICM)
(5)S154
(6)S119
(7)Ignition Control Module (ICM) Connector
(8)Generator
(9)Generator Connector
(10)Ignition Coil
(11)Manifold Absolute Pressure (MAP) Sensor Connector
(12)Manifold Absolute Pressure (MAP) Sensor
(13)Evaporative Emission (EVAP) Canister Purge Solenoid
Figure 8:

Heated Oxygen Sensors
Object Number: 430019 Size: MF
(1)Heated Oxygen Sensor (HO2S) Bank 1 Sensor 2
(2)Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1
(3)Heated Oxygen Sensor (HO2S) Bank 2 Sensor 1
Figure 9:

Vehicle Speed Sensor (VSS) (2WD w/A/T)
Object Number: 209622 Size: SF
(1)Vehicle Speed Sensor (VSS)
Figure 10:

A4WD Transfer Case Locator View
Object Number: 516428 Size: MF
(1)Propshaft Speed Sensor - Rear Connector
(2)Transfer Case Encoder Motor Connector
(3)Vehicle Speed Sensor (VSS) Connector
(4)Propshaft Speed Sensor - Front Connector
(5)Transfer Case
(6)P301
Figure 11:

Evaporative Emission (EVAP) Canister Vent Solenoid
Object Number: 241129 Size: SF
(1)Left Hand Frame Rail
(2)Fuel Filter
(3)Evaporative Emission (EVAP) Canister Vent Solenoid
Figure 12:

Fuel Tank, Fuel Tank Pressure (FTP) Sensor, and Fuel Sender
Object Number: 241141 Size: LF
(1)Fuel Tank
(2)Fuel Pump and Sender Assembly
(3)Fuel Tank Pressure (FTP) Sensor Connector
(4)Fuel Pump and Sender Assembly Connector
(5)Left Hand Frame Rail