Cobalt 2006-2008, G5 2007

Ignition Coil Pack

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Removal & Installation



2.0L Engine
  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Check stored fault messages.
  4.  
  5. Switch off ignition.
  6.  
  7. Remove or disconnect the following:

    The negative battery cable
     
    The ignition coil connectors from the ignition coils
     
    The retaining bolts from the ignition coils
     
    The ignition coils from the engine

    Click image to see an enlarged view

    Fig. Removing ignition coils-2.0L Engine

     

  8.  

To install:


NOTE
Make sure that the ignition coil seals are properly seated to the valve cover.

  1. Install or connect the following:

    The ignition coil
     
    The ignition coil retaining bolts, tighten to 89 inch lbs. (10 Nm)
     
    the ignition coil connectors
     

  2.  

2.2L Engine
  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Check stored fault messages.
  4.  
  5. Switch off ignition.
  6.  
  7. Remove or disconnect the following:

    The negative battery cable
     
    The engine oil fill cap
     
    Grasp the intake manifold cover by the lower right inboard corner and pull up to disengage the cover from the stud
     
    Grasp the intake manifold cover by the upper left corner and pull up to disengage the cover from the stud
     
    Remove the intake manifold cover

    Click image to see an enlarged view

    Fig. Intake manifold cover removal-2.2L & 2.4L Engines



    Click image to see an enlarged view

    Fig. Removing ignition coil electrical connectors (1)-2.2L & 2.4L Engines

     

  8.  
  9. Disconnect the ignition coil electrical connectors (1).
  10.  
  11. Remove the ignition coil bolts.
  12.  
  13. Remove the ignition coils.

    Click image to see an enlarged view

    Fig. Removing the ignition coils-2.2L & 2.4L Engines

  14.  

To install:

  1. Install or connect the following:

    The ignition coils into position over the spark plugs
     
    The ignition coil bolts and tighten to 89 inch lbs (10 Nm)
     
    The ignition coil electrical connectors (1)
     

  2.  
  3. Install the intake manifold cover:
    1. Place the intake manifold cover onto the engine over the studs.
    2.  
    3. Push down on the intake manifold cover directly over the lower right stud in order to engage the cover to the stud.
    4.  
    5. Push down on the intake manifold cover directly over the upper left stud in order to engage the cover to the stud.
    6.  
    7. Install the engine oil fill cap.
    8.  

  4.  

Testing



The Powertrain Control Module (PCM) regulates the individual ignition coils and checks their function via a separate diagnostic cable. A diagnostic trouble code is generated if the control module detects a faulty signal for an ignition coil.

  1. Fault symptoms may include:

    Malfunction Indicator Lamp (MIL) lit
     
    The engine not firing on all cylinders
     

  2.  

The Diagnostic Trouble Code (DTC) can help diagnose which ignition coil is involved.

 
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