Knock Sensor: Service and Repair

2007 Chevrolet Cobalt L4-2.2LSECTION Service and Repair


Knock Sensor Replacement

Removal Procedure

1. Remove the starter.




2. Disconnect the knock sensor (KS) harness connector.
3. Remove the KS retaining bolt.
4. Remove the KS.

Installation Procedure






Notice: Refer to Fastener Notice.

Important: The KS threaded surfaces must be clean before installation.

1. Install the knock sensor.

Tighten the knock sensor retaining bolt to 25 N.m (18 lb ft).

2. Connect the knock sensor harness connector.
3. Install the starter.
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.