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HOMESERVICE MANUALSCHEVROLET2006COBALT SS, 4D SEDAN, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 165 (ENGINE CONTROLS - 2.2L (L61) INTRODUCTION)REPAIR INSTRUCTIONSENGINE CONTROL MODULE (ECM) REPLACEMENTREMOVAL PROCEDURE
2006 Chevrolet Cobalt SS, 4D Sedan, Standard

Removal Procedure

2006 Chevrolet Cobalt SS, 4D Sedan, StandardSECTION Removal Procedure
WARNING: This page is about a different car, the 2005 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
    IMPORTANT: It is necessary to record the remaining engine oil life. If the replacement module is not programed with the remaining engine oil life, the engine oil life will default to 100 percent. If the replacement module is not programmed with the remaining engine oil life, the engine oil will need to be changed at 5 000 km (3,000 mi) from the last engine oil change.
  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 Disconnect/Connect Procedure in Engine Electrical.
  3. Disconnect the intake air temperature (IAT) sensor.
  4. Loosen the clamp at the air cleaner assembly.
  5. Remove the push pin attachment from the outlet resonator/duct assembly to support bracket.
    Fig 1: Positioning Outlet Resonator/Duct Assembly
    GM897621Courtesy of GENERAL MOTORS CORP.
  6. Loosen the clamp at the throttle body assembly.
  7. Disconnect the positive crankcase ventilation (PCV) fresh air hose at the cam cover.
  8. Remove the outlet resonator/duct assembly.
  9. Remove the J 1 and J 2 connectors at the engine control module (ECM).
  10. Remove the 4 ECM attachment bolts.
RENDER: 1.0x

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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.