Circuit/System Verification

WARNING: This page is about a different car, the 2008 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.

IMPORTANT: Verify that the engine is in good mechanical condition before continuing with this diagnostic.

Review the ignition system specifications and the spark plug inspection procedure to verify the following:
- The ignition coil/modules are correctly connected
- The proper firing order
- The proper spark plug type
- The proper spark plug gap and torque
  Refer to Ignition System Specifications and Spark Plug Inspection .
If the engine will start, then observe the scan tool Misfire Current Cylinder parameters. This will indicate the affected ignition coil/modules.