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HOMESERVICE MANUALSCHEVROLET2008HHR LT, 2.4 P, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 3 (ENGINE CONTROLS AND FUEL - 2.0L - INTRODUCTION (2 OF 2))REPAIR INSTRUCTIONSENGINE CONTROL MODULE REPLACEMENTREMOVAL PROCEDURE
2008 Chevrolet HHR LT, 2.4 P, Automatic

Removal Procedure

2008 Chevrolet HHR LT, 2.4 P, AutomaticSECTION Removal Procedure
WARNING: This page is about a different variant/trim than selected.
    Fig 1: ECM/TCM Cover
    GM1631889Courtesy of GENERAL MOTORS CORP.
  1. Using a scan tool, retrieve the percentage of remaining engine oil. Record the remaining engine oil life.
  2. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
  3. Remove the ECM/TCM cover.
    4. Fig 2: ECM Electrical Connector
    GM2000940Courtesy of GENERAL MOTORS CORP.
  4. Disconnect the ECM electrical connectors (1).
    5. NOTE: Control module damage may result when the metal case contacts battery voltage. DO NOT contact the control module metal case with battery voltage when servicing a control module, using battery booster cables or when charging the vehicles battery.
  5. Disengage the plastic retainer tabs (2) and remove the ECM (3).
    6. Fig 3: View Of ECM Retaining Tab
    GM1833662Courtesy of GENERAL MOTORS CORP.
  6. Release the retaining tab (1) in order to release the ECM from the underhood junction block bracket.
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.