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

Ignition System and Engine Control Module (ECM)
Object Number: 1487893 Size: LF
(1)Ignition Coil
(2)Engine Control Module (ECM)
(3)Engine Coolant Temperature (ECT) Sensor
(4)Heated Oxygen Sensor (HO2S) 1
(5)Engine Coolant Temperature (ECT) Gage Sensor
Figure 2:

Evaporative Emissions (EVAP), Crankshaft Position (CKP), Camshaft Position (CMP), and Exhaust Gas Recirculation (EGR)
Object Number: 1487894 Size: LF
(1)Evaporative Emissions (EVAP) Canister Purge Solenoid
(2)Crankshaft Position (CKP) Sensor
(3)Camshaft Position (CMP) Sensor
(4)Exhaust Gas Recirculation (EGR) Valve
Figure 3:

Fuel System
Object Number: 1487891 Size: LF
(1)Idle Air Control (IAC) Valve
(2)Throttle Position (TP) Sensor
(3)Throttle Body
(4)Fuel Injector #1
(5)Fuel Injector #2
(6)Fuel Injector #3
(7)Knock Sensor (KS)
(8)Manifold Absolute Pressure (MAP) Sensor
(9)Engine Oil Pressure Switch
Figure 4:

0.8 Engine Controls
Object Number: 1656472 Size: MF
(1)Engine Cooling Surge Tank
(2)Intake Air Temperature (IAT) Sensor
(3)Manifold Absolute Pressure (MAP) Sensor
(4)Throttle Body Assembly
(5)Brake Fluid Reservoir
(6)Battery
(7)Engine Control Module (ECM)
(8)Engine Compartment Fuse Block
(9)Headlamp
(10)Air Cleaner Assembly
(11)Idle Air Control (IAC) Valve
(12)Throttle Position Sensor (TPS)
(13)Evaporator Canister Hose
(14)Ignition Wire
(15)Throttle Cable
(16)Air Intake Snorkel
(17)Electronic Ignition (EI)System
(18)Engine Oil Cap
(19)Power Steering Fluid Reservoir
(20)Oil Level Stick
(21)Electronic Brake Control Module (EBCM)
(22)Washer Fluid Reservoir
Figure 5:

Ignition Module and Engine Control Module (ECM)
Object Number: 1487878 Size: LF
(1)Ignition Module
(2)Engine Control Module (ECM) (Sirus-D4)
(3)Engine Coolant Temperature (ECT) Sensor
(4)Engine Coolant Temperature (ECT) Gage Switch
Figure 6:

Camshaft Position (CMP) Sensor
Object Number: 1487836 Size: LF
(1)Throttle Body (Main Throttle Idle Actuator (MTIA)
(2)Camshaft Position (CMP) Sensor
(3)Fuse Block Underhood
(4)Battery
Figure 7:

Crankshaft Position (CKP) Sensor and Exhaust Gas Recirculation (EGR) Valve
Object Number: 1487842 Size: LF
(1)Crankshaft Position (CKP) Sensor
(2)Exhaust Gas Recirculation (EGR) Valve
(3)Heated Oxygen (HO2S) 2 Sensor
Figure 8:

Fuel Injector System
Object Number: 1487865 Size: LF
(1)Fuel Injector #1
(2)Fuel Injector #2
(3)Fuel Injector #3
(4)Fuel Injector #4
(5)Throttle Body (Main Throttle Idle Actuator (MTIA))
(6)Knock Sensor (KS)
(7)Manifold Absolute Pressure (MAP) Sensor
Figure 9:

1.0 Engine Controls
Object Number: 1656483 Size: MF
(1)Engine Cooling Surge Tank
(2)Intake Air Temperature (IAT) Sensor
(3)Manifold Absolute Pressure (MAP) Sensor
(4)Throttle Body Assembly
(5)Brake Fluid Reservoir
(6)Battery
(7)Engine Control Module (ECM)
(8)Engine Compartment Fuse Block
(9)Headlamp
(10)Air Cleaner Assembly
(11)Air Intake Snorkel
(12)Ignition Wire
(13)Electronic Ignition (EI)System
(14)Power Steering Fluid Reservoir
(15)Oil Level Stick
(16)Engine Oil Cap
(17)Electronic Brake Control Module (EBCM)
(18)Washer Fluid Reservoir
Figure 10:

Intake Air Temperature (IAT) Sensor and Oxygen Sensor (O2S)
Object Number: 1487872 Size: LF
(1)Intake Air Temperature (IAT) Sensor
(2)Throttle Body
(3)Oxygen (O2S) Sensor/ Heated Oxygen Sensor (HO2S) 1
(4)Power Steering Oil Pressure Switch
Figure 11:

Engine Sensors
Object Number: 1656496 Size: MF
(1)(ECM) Engine Control Module
(2)Data Link Connector (DLC) (Passenger Compartment)
(3)Engine Compartment Relay and Fuse Blck
(4)Exaust Gas Recirculation (EGR) Valve
(5)Throttle Body Assembly (Idle Air Control, Throttle Position Sensors)
(6)Maifold Absolute Pressure (MAP) Sensor
(7)Fuel Injectors
(8)Electronic Ignition System (EI)
(9)Intake Air Temperature (IAT) Sensor
(10)EVAP Purge Solenoid
(11)Knock Sensor
(12)Heated Oxygen Sensor 1 (HO2S) 1
(13)Crankshaft Position (CKP) Sensor
(14)Camshaft Position (CMP) Sensor
(15)Engine Coolant Temperature (ECT) Sensor