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.
2007 Chevrolet Malibu L4-2.2LFACTORY OEM SERVICE PROCEDURE
Knock Sensor: Service and Repair
Knock Sensor Replacement
Removal Procedure
1. Raise and support the vehicle. Refer to Vehicle Lifting.
2. Remove the connector position assurance (CPA) retainer (1).
3. Disconnect the engine wiring harness electrical connector (2) from the knock sensor jumper wire electrical connector (3).
4. Remove the knock sensor jumper wire electrical connector rosebud clip from the oil level indicator tube tab.
5. Loosen the knock sensor bolt.
6. Remove the knock sensor.
Installation Procedure
Important: Rotate the pigtail 90 degrees from vertical before securing the bolt.
1. Position the knock sensor to the engine block.
Notice: Refer to Fastener Notice.
2. Tighten the knock sensor bolt.
Tighten the bolt to 25 N.m (18 lb ft).
3. Connect the engine wiring harness electrical connector (2) to the knock sensor jumper wire electrical connector (3).
4. Install the connector position assurance (CPA) retainer (1).
5. Install the knock sensor jumper wire electrical connector rosebud clip to the oil level indicator tube tab.
6. Lower the vehicle.
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.