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 MANUALSCHEVROLET2008MALIBU L4-2.4L HYBRIDREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTIGNITION SYSTEMKNOCK SENSORSERVICE AND REPAIR
2008 Chevrolet Malibu L4-2.4L Hybrid
Knock Sensor: Service and Repair
2008 Chevrolet Malibu L4-2.4L HybridSECTION Service and Repair
Knock Sensor Replacement
Removal Procedure
1. Disconnect the negative battery cable.
2. Raise and support the vehicle. Refer to Vehicle Lifting.
3. Disconnect the engine wiring harness electrical connector (1) from the knock sensor pigtail electrical connector (6).
4. Remove the knock sensor electrical connector pigtail (6) clip from the oil level indicator tube bracket.
5. Remove the knock sensor bolt.
6. Remove the knock sensor.
Installation Procedure
Important: Rotate the pigtail 90 degrees from vertical before securing the fastener.
1. Install the knock sensor.
Notice: Refer to Fastener Notice.
2. Install the knock sensor bolt.
Tighten the bolt to 25 N.m (18 lb ft).
3. Install the knock sensor electrical connector pigtail (6) clip to the oil level indicator tube bracket.
4. Connect the engine wiring harness electrical connector (1) to the knock sensor pigtail electrical connector (6).
5. Lower the vehicle.
6. Connect the negative battery cable.
RENDER: 1.0x
NO RELATED
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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.