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

System Component Locations


Object Number: 1589521  Size: LF
(1)Fuel Tank Pressure Sensor
(2)Modular Fuel Pump and Sender Assembly
(3)Manifold Absolute Pressure Sender Assembly
(4)Oil Pressure Sensor
(5)Heated Oxygen Sensor Bank 2
(6)Ignition Coil Module Bank 2
(7)Powertrain Interface Module
(8)EVAP Canister Purge Solenoid
(9)Engine Coolant Temperature (ECT) Sensor
(10)Mass Air Flow (MAF) Sensor
(11)A/C Refridgerant Pressure Sensor
(12)Intake Air Temperature (IAT) Sensor
(13)Engine Cooling Fans
(14)Throttle Position (TP) Sensor
(15)Idle Air Control (IAC) Valve
(16)Knock Sensor (KS)
(17)Crankshaft Position (CKP) Sensor
(18)Knock Sensor (KS)
(19)Camshaft Position (CMP) Sensor
(20)Underhood Fuse Block
(21)Fuel Injectors
(22)Ignition Coil Module Bank 1
(23)Heated Oxygen Sensors Bank 1
(24)Vehicle Speed Sensor (VSS)
(25)Evaporative Canister Vent Solenoid
Figure 2:

Sensor Locations


Object Number: 1589545  Size: LF
(1)Throttle Actuator Control
(2)Fuel Injectors
(3)Oil Pressure Sensor
(4)Knock Sensor-Left
(5)Engine Coolant Temperature Sensor
(6)Camshaft Position Sensor
Figure 3:

Engine Sensors 2


Object Number: 1589572  Size: LF
(1)MAP Sensor
(2)EVAP Canister Purge Valve
(3)Coil Assembly
(4)HO2S Sensor Bank 1
(5)HO2S Sensor Bank 2
(6)Crankshaft Position Sensor
Figure 4:

Heated Oxygen Sensors


Object Number: 1372079  Size: LF
(1)Heated Oxygen Sensor Bank Two Sensor One
(2)Heated Oxygen Sensor Bank One Sensor One
(3)Heated Oxygen Sensor Bank One Sensor Two
(4)Heated Oxygen Sensor Bank Two Sensor Two
Figure 5:

Throttle Pedal Assembly


Object Number: 1589556  Size: MF
(1)Accelerator Pedal Position Sensor
Figure 6:

ECM


Object Number: 1589575  Size: MF
(1)ECM
(2)Mass Air Flow Sensor
(3)A/C Pressure Sensor