GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2001 🢒 Alero Export 🢒 Body and Accessories 🢒 Wiring Systems 🢒 Engine Controls Component Views
Figure 1:

LH Side of Engine
Object Number: 371074 Size: LF
(1)C130
(2)Manifold Absolute Pressure (MAP) Sensor
(3)Exhaust Gas Recirculation (EGR) Valve
(4)Throttle Position (TP) Sensor
(5)Throttle Body
(6)Fuel Pressure Regulator
(7)Engine Oil Pressure (EOP) Sensor
(8)Knock Sensor (KS)
(9)Crankshaft Position (CKP) Sensor A Connector
(10)Positive Crankcase Ventilation (PCV) Valve
(11)Camshaft Position (CMP) Sensor Connector
(12)Fuel Rail
(13)Upper Intake Manifold
Figure 2:

RH Side of Engine
Object Number: 531383 Size: LF
(1)Upper Intake Manifold
(2)Manifold Absolute Pressure (MAP) Sensor
(3)Spark Plug Wires
(4)Ignition Coil
(5)Heated Oxygen Sensor (HO2S) Sensor 2
(6)Crankshaft Position (CKP) Sensor B
(7)Exhaust Gas Recirculation (EGR) Valve
(8)Throttle Position (TP) Sensor
(9)Fuel Feed and Return Pipes
(10)Throttle Body
(11)Idle Air Control (IAC) Valve
(12)Positive Crankcase Ventilation (PCV)
(13)Evaporative Emission (EVAP) Canister Purge Solenoid
(14)Camshaft Position (CMP) Sensor Connector
Figure 3:

Top Left Side of Engine
Object Number: 531485 Size: LF
(1)Exhaust Gas Recirculation (EGR) Valve
(2)Idle Air Control (IAC) Valve
(3)Evaporative Emission (EVAP) Canister Purge Solenoid
Figure 4:

Top Front of Engine
Object Number: 374674 Size: LF
(1)Mass Air Flow (MAF) Sensor
Figure 5:

Lower RH Front of Engine
Object Number: 327373 Size: LF
(1)Crankshaft Position (CKP) Sensor A
(2) Knock Sensor (KS)
(3)Engine Oil Pressure (EOP) Sensor
(4)Fusible Links
(5)A/C Compressor Clutch
Figure 6:

Right Rear of Engine
Object Number: 374682 Size: LF
(1)Vehicle Speed Sensor (VSS)
(2)Vehicle Speed Sensor (VSS) Connector