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.
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HOMESERVICE MANUALSCHEVROLET2008HHR L4-2.2LREPAIR AND DIAGNOSISDIAGRAMSCONNECTOR VIEWSCOMPONENT CONNECTOR END VIEWSENGINE, COOLING AND EXHAUST
2008 Chevrolet HHR L4-2.2L
Engine, Cooling and Exhaust
2008 Chevrolet HHR L4-2.2LSECTION Engine, Cooling and Exhaust
Component Connector End Views
Battery Current Sensor
Camshaft Position (CMP) Actuator Solenoid - Exhaust
Camshaft Position (CMP) Actuator Solenoid - Intake
Camshaft Position (CMP) Sensor - Exhaust
Camshaft Position (CMP) Sensor - Intake
Crankshaft Position (CKP) Sensor
Engine Coolant Temperature (ECT) Sensor
Engine Cooling Fan
Engine Oil Pressure (EOP) Switch
Fuel Injector 1 (L61 - 2.2L/LE5-2.4L)
Fuel Injector 1 (LNF-2.0L)
Fuel Injector 2 (L61-2.2L/LE5-2.4L)
Fuel Injector 2 (LNF-2.0L)
Fuel Injector 3 (L61-2.2L/LE5-2.4L)
Fuel Injector 3 (LNF-2.0L)
Fuel Injector 4 (L61-2.2L/LE5-2.4L)
Fuel Injector 4 (LNF-2.0L)
Heated Oxygen Sensor (HO2S) 1 (L61-2.2L/LE5-2.4L)
Heated Oxygen Sensor (HO2S) 1 (LNF-2.0L)
Heated Oxygen Sensor (HO2S) 2
Ignition Coil Module 1
Ignition Coil Module 2
Ignition Coil Module 3
Ignition Coil Module 4
Intake Air Pressure and Temperature Sensor (LNF-2.0L)
Knock Sensor (KS) (L61-2.2L/LE5-2.4L)
Knock Sensor (KS) 1 (LNF-2.0L)
Knock Sensor (KS) 2 (LNF-2.0L)
Manifold Absolute Pressure (MAP) Sensor
Mass Air Flow (MAF)/Intake Air Temperature (IAT) Sensor
Throttle Actuator Control (TAC) Module (L61-2.2L/LE5-2.4L)
Throttle Body (LNF-2.0L)
Turbo Bypass Valve Solenoid (LNF-2.0L)
Turbocharger Wastegate Solenoid (LNF-2.0L)
RENDER: 1.0x
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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.