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HOMESERVICE MANUALSCHEVROLET2006COBALT SS, 4D SEDAN, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 410 (ENGINE CONTROLS - 2.2L (L61) - INTRODUCTION (2 OF 2))REPAIR INSTRUCTIONSENGINE CONTROL MODULE (ECM) REPLACEMENTNOTES
2006 Chevrolet Cobalt SS, 4D Sedan, Standard

Engine Control Module (ECM) Replacement: Notes

2006 Chevrolet Cobalt SS, 4D Sedan, StandardSECTION Notes
WARNING: This page is about a different car, the 2006 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
  • Turn the ignition OFF when installing or removing the control module connectors and disconnecting or reconnecting the power to the control module (battery cable, powertrain control module (PCM)/engine control module (ECM)/transaxle control module (TCM) pigtail, control module fuse, jumper cables, etc.) in order to prevent internal control module damage.
  • 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 vehicle battery.
  • In order to prevent any possible electrostatic discharge damage to the control module, do no touch the connector pins or the soldered components on the circuit board.
  • Remove any debris from around the control module connector surfaces before servicing the control module. Inspect the control module connector gaskets when diagnosing or replacing the control module. Ensure that the gaskets are installed correctly. The gaskets prevent contaminant intrusion into the control module.
  • The replacement control module must be programmed.
    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. Fig 1: Positioning Outlet Resonator/Duct Assembly
    GM897621Courtesy of GENERAL MOTORS CORP.
  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.
  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.