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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 REPLACEMENTINSTALLATION PROCEDURE
2008 Chevrolet HHR LS, Automatic

Installation Procedure

2008 Chevrolet HHR LS, AutomaticSECTION Installation Procedure
WARNING: This page is about a different variant/trim than selected.
IMPORTANT: Rotate the pigtail 90 degrees from vertical before securing the fastener.
    Fig 1: Knock Sensors
    GM1769811Courtesy of GENERAL MOTORS CORP.
  1. Position the appropriate knock sensor to the engine block.
    2. NOTE: Refer to Fastener Notice .
  2. Tighten the appropriate knock bolt.

    Tighten:  Tighten the bolt to 25 N.m (18 lb ft).

    3. Fig 2: Front & Rear Knock Sensor Clips
    GM1717513Courtesy of GENERAL MOTORS CORP.
  3. Install the front knock sensor clip (1) to the oil level indicator tube, if required.
  4. Install the rear knock sensor clip (2) to the intake manifold brace, if required.
    5. Fig 3: ETC Connector
    GM1825527Courtesy of GENERAL MOTORS CORP.
  5. Connect the engine wiring harness electrical connector (2) to the rear knock sensor.
    6. Fig 4: Front Knock Sensor Electrical Connectors
    GM1717515Courtesy of GENERAL MOTORS CORP.
  6. Connect the engine wiring harness electrical connector (2) to the front 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.