2008 Pontiac G5 L4-2.2LFACTORY OEM SERVICE PROCEDURE

Powertrain Component Views



Powertrain Component Views

Electronic Components

Factory service manual diagram



1 - TFP Manual Valve Position Switch Assembly
2 - 1-2 Shift Solenoid Valve
3 - 2-3 Shift Solenoid Valve
4 - Output Speed Sensor
5 - Input Speed Sensor
6 - Pressure Control Solenoid
7 - TCC Control PWM Solenoid

Rear Side of the Engine

Factory service manual diagram



1 - Backup Lamp Switch (M86)
2 - Engine Coolant Temperature Sensor (ECT)
3 - Heated Oxygen Sensor (HO2S) 1
4 - Heated Oxygen Sensor (HO2S) 2 Connector

Right Lower Front of Engine - L61

Right Lower Front of Engine - L61:

Factory service manual diagram



1 - Starter
2 - Starter Solenoid

Rear of the Engine

Factory service manual diagram



1 - Heated Oxygen Sensor (HO2S) 1 Connector
2 - Heated Oxygen Sensor (HO2S) 2 Connector
3 - Heated Oxygen Sensor (HO2S) 1

HO2S 2

Factory service manual diagram



1 - Catalytic Converter
2 - Heated Oxygen Sensor (HO2S) 2

Top Front of the Engine

Factory service manual diagram



1 - Fuel Injector 1
2 - Fuel Injector 2
3 - Fuel Injector 3
4 - Fuel Injector 4

Top of the Engine

Factory service manual diagram



1 - Ignition Coil 1
2 - Ignition Coil 2
3 - Ignition Coil 3
4 - Ignition Coil 4

Fuel Tank Components

Factory service manual diagram



1 - Evaporative Emission (EVAP) Canister Vent Solenoid
2 - Evaporative Emission (EVAP) Canister
3 - Fuel Tank
4 - Fuel Pump and Sender Assembly
5 - X305
6 - Fuel Filter
7 - Fuel Tank Pressure (FTP) Sensor

Front of the Engine (L61)

Factory service manual diagram



1 - Throttle Actuator Control (TAC) Module
2 - Ignition Control Module (ICM)
3 - Evaporative Emission (EVAP) Canister Purge Solenoid
4 - Engine Oil Pressure (EOP) Switch
5 - Crankshaft Position (CKP) Sensor
6 - Knock Sensor (KS)
7 - Starter
8 - Starter Solenoid

Transmission Components

Factory service manual diagram



1 - Backup Lamp Switch (M86)
2 - Vehicle Speed Sensor (VSS)
3 - Transmission Case

Rear of the Engine Block (L61)

Factory service manual diagram



1 - Engine Coolant Temperature (ECT) Sensor
2 - Engine Block

Left Side of the Engine Compartment

Factory service manual diagram



1 - Transmission Control Module (TCM) (MN5)
2 - Left Front Strut Tower
3 - Engine Control Module (ECM)
4 - Electronic Brake Control Module (EBCM) (JM4/JL4/JL9)
5 - Fuse Block - Underhood Bracket

G105

Factory service manual diagram



1 - Transmission Case
2 - X100
3 - G105
4 - Engine Harness

Front Lower Left of the Engine (L61/LE5)

Front Lower Left of the Engine (L61):

Factory service manual diagram



1 - Generator
2 - Fusible Link
3 - Starter Solenoid
4 - A/C Compressor Clutch (C67)

Lower Front of the Engine

Factory service manual diagram



1 - Starter Solenoid
2 - Oil Pressure Switch
3 - C102
4 - Crankshaft Position (CKP) Sensor
5 - Starter

Turbocharger Boost Gage

Factory service manual diagram



1 - A-Pillar Trim
2 - Turbocharger Boost Gage (LNF)

Front of the Engine (LE5)

Factory service manual diagram



1 - Fuel Injector 1
2 - Fuel Injector 2
3 - Fuel Injector 3
4 - Manifold Absolute Pressure (MAP) Sensor
5 - Fuel Injector 4
6 - Evaporative Emission (EVAP) Canister Purge Solenoid Valve
7 - Camshaft Position (CMP) Sensor - Intake
8 - Knock Sensor (KS)
9 - Engine Oil Pressure (EOP) Switch
10 - Crankshaft Position (CKP) Sensor
11 - Starter Solenoid
12 - Starter
13 - Intake Manifold

Mass Air Flow (MAF)/Inlet Air Temperature (IAT) Sensor

Factory service manual diagram



1 - Mass Air Flow (MAF)/Inlet Air Temperature (IAT) Sensor

Fuel Tank Components

Factory service manual diagram



1 - Fuel Tank
2 - Fuel Pump and Sender Assembly
3 - Fuel Tank Pressure Sensor
4 - Evaporative Emission (EVAP) Canister Vent Solenoid Valve
5 - Evaporative Emission (EVAP) Canister

Left Side View of Engine

Factory service manual diagram



1 - MAF/IAT Sensor
2 - Ignition Coil Module 1
3 - Ignition Coil Module 2
4 - Ignition Coil Module 3
5 - Ignition Coil Module 4
6 - Fuel Rail
7 - Fuel Injector 1
8 - Fuel Injector 2
9 - Fuel Injector 3
10 - Fuel Injector 4
11 - Throttle Actuator Control (TAC) Module

Manifold Absolute Pressure (MAP) Sensor (L61)

Factory service manual diagram



1 - Manifold Absolute Pressure (MAP) Sensor

Rear View of Engine

Factory service manual diagram



1 - Ignition Coil Module 4
2 - Ignition Coil Module 3
3 - Ignition Coil Module 2
4 - Camshaft Position (CMP) Actuator Solenoid-Intake
5 - Camshaft Position (CMP) Actuator Solenoid-Exhaust
6 - Ignition Coil Module 1
7 - Engine Harness
8 - Heated Oxygen Sensor (HO2S) 1
9 - Heated Oxygen Sensor (HO2S) 2
10 - Engine Coolant Temperature (ECT) Sensor
11 - Camshaft Position (CMP) Sensor (Exhaust)
12 - G107
13 - Camshaft Position (CMP) Sensor (Intake)
14 - Evaporative Emission (EVAP) Canister Purge Solenoid Valve

Secondary Air Injection (AIR) Components (NU6)

Factory service manual diagram



1 - Secondary Air Injection (AIR) Solenoid (NU6)
2 - Coolant Overflow Container
3 - Secondary Air Injection (AIR) Relay (NU6)
4 - Secondary Air Injection (AIR) Pump (NU6)
5 - Engine Block

Front of the Engine (L61)

Factory service manual diagram



1 - Fuel Injector 1
2 - Fuel Injector 2
3 - Fuel Injector 3
4 - Manifold Absolute Pressure (MAP) Sensor
5 - Fuel Injector 4
6 - Evaporative Emission (EVAP) Canister Purge Solenoid
7 - Camshaft Position (CMP) Sensor - Intake
8 - Knock Sensor (KS)
9 - Engine Oil Pressure (EOP) Switch
10 - Crankshaft Position (CKP) Sensor
11 - Starter Solenoid
12 - Starter
13 - Intake Manifold

Left Side View of Engine

Factory service manual diagram



1 - Ignition Coil Module 1
2 - Ignition Coil Module 2
3 - Ignition Coil Module 3
4 - Ignition Coil Module 4
5 - Fuel Rail
6 - Fuel Injector 1
7 - Fuel Injector 2
8 - Fuel Injector 3
9 - Fuel Injector 4
10 - Throttle Actuator Control (TAC) Module

Left Front of the Engine Compartment

Factory service manual diagram



1 - Windshield Washer Fluid Pump
2 - Windshield Wiper Motor Assembly
3 - Brake Fluid Level Switch
4 - Fuse Block - Underhood
5 - G109
6 - Transmission Control Module (TCM) (MN5)
7 - Engine Control Module (ECM)
8 - Electronic Brake Control Module (EBCM)

Front of Engine Compartment View - LE5

Front of Engine Compartment View:

Factory service manual diagram



1 - A/C Compressor
2 - A/C Refrigerant Pressure Sensor
3 - Cooling Fan Resistor
4 - Cooling Fan Connector
5 - Cooling Fan
6 - Engine Harness

Park Neutral Position (PNP) Switch

Factory service manual diagram



1 - Engine - L61
2 - Fuse Block - Underhood
3 - Park Neutral Position (PNP) Switch (MN5)

Engine Harness Routing - L61

Factory service manual diagram



1 - Electronic Power Steering (EPS) Harness
2 - G109
3 - Fuse Block - Underhood
4 - G103
5 - Battery Cable Harness
6 - X100
7 - G105
8 - G111
9 - X160

Fuel Injector Harness Ground

Factory service manual diagram



1 - Fuse Block - Underhood
2 - G107

Left Side of Engine (LNF)

Factory service manual diagram



1 - Manifold Absolute Pressure (MAP) Sensor
2 - Throttle Body
3 - Starter Motor
4 - A/C Compressor
5 - Generator
6 - Evaporative Emission (EVAP) Canister Purge Solenoid Valve

Left Side of Engine Compartment - LNF

Factory service manual diagram



1 - Fuel Rail Pressure (FRP) Sensor
2 - Intake Air Pressure and Temperature Sensor
3 - Brake Booster Vacuum Sensor
4 - Brake Fluid Level Switch
5 - Brake Booster Pump Motor

Right Side of Engine (LNF)

Factory service manual diagram



1 - Turbocharger
2 - Heated Oxygen Sensor (HO2S) 2
3 - Heated Oxygen Sensor (HO2S) 1
4 - Camshaft Position (CMP) Sensor - Exhaust

Left Side of Engine (LNF)

Factory service manual diagram



1 - Ignition Coil 1
2 - Ignition Coil 2
3 - Ignition Coil 3
4 - Ignition Coil 4
5 - High Pressure Fuel Pump
6 - Fuel Injector 1
7 - Fuel Injector 2
8 - Fuel Injector 3
9 - Fuel Injector 4
10 - Manifold Absolute Pressure (MAP) Sensor
11 - Engine Oil Pressure (EOP) Switch
12 - Crankshaft Position (CKP) Sensor
13 - Knock Sensor (KS) 2
14 - Starter Motor
15 - Evaporative Emission (EVAP) Canister Purge Solenoid Valve
16 - Camshaft Position (CMP) Actuator Solenoid - Exhaust
17 - Camshaft Position (CMP) Actuator Solenoid - Intake
Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.

Rather have a pro handle this?

A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.

Comes to youSame-day available12-month warranty
Get a Free Quote

No obligation. See pricing before you book.