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HOMESERVICE MANUALSCHEVROLET2008HHR LS, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 3 (ENGINE CONTROLS AND FUEL - 2.0L - INTRODUCTION (2 OF 2))REPAIR INSTRUCTIONSKNOCK SENSOR REPLACEMENTREMOVAL PROCEDURE
2008 Chevrolet HHR LS, Automatic

Removal Procedure

2008 Chevrolet HHR LS, AutomaticSECTION Removal Procedure
WARNING: This page is about a different variant/trim than selected.
    Fig 1: Front Knock Sensor Electrical Connectors
    GM1717515Courtesy of GENERAL MOTORS CORP.
  1. Disconnect the engine wiring harness electrical connector (2) from the front knock sensor, if required.
    2. Fig 2: ETC Connector
    GM1825527Courtesy of GENERAL MOTORS CORP.
  2. Disconnect the engine wiring harness electrical connector (2) from the rear knock sensor, if required.
    3. Fig 3: Front & Rear Knock Sensor Clips
    GM1717513Courtesy of GENERAL MOTORS CORP.
  3. Remove the front knock sensor clip (1) from the oil level indicator tube, if required.
  4. Remove the rear knock sensor clip (2) from the intake manifold brace, if required.
    5. Fig 4: Knock Sensors
    GM1769811Courtesy of GENERAL MOTORS CORP.
  5. Loosen the appropriate knock bolt.
  6. Remove the appropriate knock sensor.
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.