GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2008 🢒 Impala 🢒 Power and Signal Distribution 🢒 Wiring Systems and Power Management 🢒 Powertrain Component Views
Figure 1:

Behind Radiator
Object Number: 1204217 Size: LF
(1)Cooling Fan - Right
(2)Cooling Fan - Left
Figure 2:

Left Front of the Engine Compartment
Object Number: 1653137 Size: LF
(1)Mass Air Flow (MAF) Sensor/Intake Air Temperature (IAT) Sensor
(2)Brake Booster Vacuum Sensor (LZG/LS4)
(3)Windshield Wiper Motor
(4)Electronic Brake Control Module (EBCM)
(5)A/C Refrigerant Pressure Sensor
(6)Transmission Control Module (TCM)
(7)Engine Control Module (ECM)
(8)G101
(9)Inflatable Restraint Front End Sensor - Left
Figure 3:

Lower Front of the Engine (LZE/LZ4/LZG)
Object Number: 1700485 Size: LF
(1)Exhaust Manifold
(2)Starter
(3)Cable Pro Fuse (6J1)
(4)A/C Compressor Clutch
Figure 4:

Right Front of the Engine Compartment
Object Number: 1653146 Size: LF
(1)Fuse Block - Underhood
(2)Generator
(3)Brake Fluid Level Switch
(4)Battery
(5)Inflatable Restraint Front End Sensor - Right
(6)G100
(7)Horn Assembly
(8)Windshield Washer Fluid Container
(9)Windshield Washer Fluid Level Switch
(10)Windshield Washer Fluid Pump
(11)Battery Current Sensor
(12)G102
Figure 5:

Lower Right Front of Engine
Object Number: 305309 Size: LF
(1)A/C Compressor Clutch
(2)A/C Compressor Clutch Connector
(3)A/C Compressor
Figure 6:

Secondary Air Injection (AIR) Components (LZ4/NU3)
Object Number: 1872327 Size: LF
(1)Engine - LZ4
(2)Secondary Air Injection (AIR) Pump Solenoid
(3)Throttle Body
(4)Secondary Air Injection (AIR) Solenoid Relay
(5)Secondary Air Injection (AIR) Pump Relay
(6)Secondary Air Injection (AIR) Pump
Figure 7:

Front of the Engine (LZE/LZ4/LZG)
Object Number: 1700287 Size: LF
(1)Camshaft Position (CMP) Sensor
(2)Knock Sensor (KS) 2
(3)Engine Oil Pressure (EOP) Sensor
(4)Camshaft Position (CMP) Actuator Solenoid Valve
Figure 8:

Front of Engine (LS4)
Object Number: 1574059 Size: LF
(1)Engine Coolant Temperature (ECT) Sensor
(2)Ignition Coil 1
(3)Ignition Coil 3
(4)Ignition Coil 5
(5)Ignition Coil 7
(6)Manifold Absolute Pressure (MAP) Sensor
(7)Throttle Body
(8)Engine Coolant Heater
(9)Knock Sensor (KS) 1
(10)Engine Oil Level Switch
(11)Camshaft Position (CMP) Sensor
Figure 9:

Top of the Engine (LZE/LZ4/LZG)
Object Number: 1872056 Size: LF
(1)Manifold Absolute Pressure (MAP) Sensor
(2)Throttle Body
(3)Intake Manifold
(4)Camshaft Position (CMP) Sensor
(5)Heated Oxygen Sensor (HO2S) 1
(6)Ignition Control Module (ICM)
Figure 10:

Beneath the Upper Intake (LZE/LZ4/LZG)
Object Number: 1700294 Size: LF
(1)Fuel Injector 5
(2)Engine Coolant Temperature (ECT) Sensor
(3)Fuel Injector 6
(4)Fuel Injector 4
(5)Fuel Injector 2
(6)Fuel Injector 1
(7)Fuel Injector 3
Figure 11:

Top of Engine (LS4)
Object Number: 1574068 Size: LF
(1)Ignition Coil 8
(2)Fuel Injector 8
(3)Evaporative Emission (EVAP) Canister Purge Solenoid Valve
(4)Manifold Absolute Pressure (MAP) Sensor
(5)Throttle Body
(6)Engine Oil Pressure (EOP) Sensor
(7)Fuel Injector 7
(8)Ignition Coil 7
(9)Fuel Injector 5
(10)Ignition Coil 5
(11)Fuel Injector 3
(12)Ignition Coil 3
(13)Fuel Injector 1
(14)Ignition Coil 1
(15)Fuel Injector 2
(16)Ignition Coil 2
(17)Fuel Injector 4
(18)Ignition Coil 4
(19)Fuel Injector 6
(20)Ignition Coil 6
Figure 12:

Near the Air Cleaner Duct (LZE/LZ4/LZG)
Object Number: 1700230 Size: LF
(1)Evaporative Emission (EVAP) Canister Purge Solenoid Valve
(2)Mass Air Flow (MAF) Sensor/Intake Air Temperature (IAT) Sensor
(3)Air Cleaner Housing
Figure 13:

Left Top Side of Engine
Object Number: 1677719 Size: LF
(1)Throttle Body
(2)Mass Air Flow (MAF) Sensor/Intake Air Temperature (IAT) Sensor
(3)Mass Air Flow (MAF) Sensor/Intake Air Temperature (IAT) Sensor Connector
Figure 14:

Transaxle
Object Number: 1958522 Size: LF
(1)Pressure Control (PC) Solenoid Valve
(2)1-2 Shift Solenoid (SS) Valve
(3)Automatic Transmission Input Shaft Speed (ISS) Sensor
(4)2-3 Shift Solenoid (SS) Valve
(5)Automatic Transmission Internal Mode Switch (IMS)
(6)Vehicle Speed Sensor (VSS)
(7)Automatic Transmission Fluid Pressure (TFP) Manual Valve Position Switch
(8)Automatic Transmission Fluid Temperature (TFT)Sensor
(9)Torque Converter Clutch (TCC) Solenoid Valve
Figure 15:

Front of the Engine (LS4)
Object Number: 1591683 Size: LF
(1)G111
(2)Starter Solenoid
(3)X100
(4)Starter
(5)Cable Pro fuse
(6)G113
Figure 16:

Rear of the Engine (LZE/LZ4/LZG)
Object Number: 1700291 Size: LF
(1)Throttle Body
(2)Ignition Control Module (ICM)
(3)Heated Oxygen Sensor (HO2S) 1
(4)Engine Coolant Heater
(5)Engine Oil Level Switch
(6)Crankshaft Position (CKP) Sensor
(7)Knock Sensor (KS) 1
Figure 17:

Rear of Engine (LS4)
Object Number: 1574070 Size: LF
(1)Ignition Coil 7
(2)Throttle Body
(3)Ignition Coil 8
(4)Ignition Coil 6
(5)Ignition Coil 4
(6)Ignition Coil 2
(7)Heated Oxygen Sensor (HO2S) 1
(8)Knock Sensor (KS) 2
(9)Crankshaft Position (CKP) Sensor
(10)Engine Oil Level Switch
(11)Valve Lifter Oil Manifold (VLOM) Assembly
Figure 18:

Underbody
Object Number: 1203644 Size: LF
(1)Heated Oxygen Sensor (HO2S) 2
Figure 19:

Fuel Tank Components
Object Number: 1653116 Size: LF
(1)Fuel Tank
(2)Fuel Pump and Sender Assembly
(3)Fuel Tank Pressure (FTP) Sensor
(4)Evaporative Emission (EVAP) Canister Vent Solenoid Valve
Figure 20:

Fuel Pump and Sender Assembly
Object Number: 886471 Size: LF
(1)Fuel Line Quick Connector
(2)Fuel Pump
(3)Base Plate
(4)Fuel Strainer
(5)Fuel Level Sensor
(6)Springs
(7)Fuel Tank Pressure (FTP) Sensor