Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2008 Pontiac G6 L4-2.4LFACTORY OEM SERVICE PROCEDURE
Coolant Temperature Sensor/Switch (For Computer): Locations
Powertrain Component Views
Top of Engine Components (LE5)
1 - Ignition Coil 4
2 - Ignition Coil 3
3 - Ignition Coil 2
4 - Camshaft Position (CMP) Actuator Solenoid - Intake
5 - Camshaft Position (CMP) Actuator Solenoid - Exhaust
6 - Ignition Coil 1
7 - G104
8 - Engine Harness
9 - Engine Block Heater Connector
10 - Heated Oxygen Sensor (HO2S) 1
11 - Heated Oxygen Sensor (HO2S) 2
12 - Engine Coolant Temperature (ECT) Sensor
13 - Camshaft Position (CMP) Sensor 2 (Exhaust)
14 - G103
15 - Camshaft Position (CMP) Sensor 1 (Intake)
16 - Evaporative Emission (EVAP) Canister Purge Solenoid
Rear of the Engine Components (LE5)
1 - Evaporative Emission (EVAP) Canister Purge Solenoid Valve
2 - Camshaft Position (CMP) Sensor - Exhaust
3 - Heated Oxygen Sensor (HO2S) 1
4 - Heated Oxygen Sensor (HO2S) 2
5 - Starter
6 - Engine Coolant Temperature (ECT) Sensor
7 - Camshaft Position (CMP) Sensor - 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.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.