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 MANUALSCHEVROLET2009COBALT L4-2.2LREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSSENSORS AND SWITCHES - COMPUTERS AND CONTROL SYSTEMSKNOCK SENSORLOCATIONS
2009 Chevrolet Cobalt L4-2.2L
Knock Sensor: Locations
2009 Chevrolet Cobalt L4-2.2LSECTION Locations
Powertrain Component Views
Engine - Front View (LE5)
1 - Manifold Absolute Pressure (MAP) Sensor (L61/LE5)
2 - Mass Air Flow (MAF)/Intake Air Temperature (IAT) Sensor (L61/LE5)
3 - Throttle Actuator Control (TAC) Module (L61/LE5)
4 - Evaporative Emission (EVAP) Canister Purge Solenoid
5 - Camshaft Position (CMP) Sensor (L61)
6 - Engine Oil Pressure (EOP) Switch
7 - Crankshaft Position (CKP) Sensor
8 - Starter Solenoid
9 - Knock Sensor (KS) (L61/LE5)
10 - A/C Compressor Clutch (C67)
11 - Generator
Engine - Front View (L61)
1 - Mass Air Flow (MAF)/Intake Air Temperature (IAT) Sensor (L61/LE5)
2 - Manifold Absolute Pressure (MAP) Sensor (L61/LE5)
3 - Evaporative Emission (EVAP) Canister Purge Solenoid
4 - Camshaft Position (CMP) Sensor (L61)
5 - Throttle Actuator Control (TAC) Module (L61/LE5)
6 - Engine Oil Pressure (EOP) Switch
7 - Crankshaft Position (CKP) Sensor
8 - Starter Solenoid
9 - Knock Sensor (KS) (L61/LE5)
10 - Secondary Air Injection (AIR) Pump (NU6)
11 - A/C Compressor Clutch (C67)
12 - Generator
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.