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Home >> Cadillac >> 2005 >> CTS Base, 2.8 T, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - 2.8L - Introduction >> Repair Instructions >> Spark Plug Replacement >> Removal Procedure

Removal Procedure

    Fig 1: View Of Spark Plugs
    GM902884Courtesy of GENERAL MOTORS CORP.
  1. Turn the ignition OFF.
  2. Remove the ignition coil. Refer to Ignition Coil(s) Replacement - Bank 1  and/orIgnition Coil(s) Replacement - Bank 2 .
    3. CAUTION: Refer to Safety Glasses and Compressed Air Caution in Cautions and Notices.
    NOTE: Clean the spark plug recess area before removing the spark plug. Failure to do so could result in engine damage because of dirt or foreign material entering the cylinder head, or by the contamination of the cylinder head threads. The contaminated threads may prevent the proper seating of the new plug. Use a thread chaser to clean the threads of any contamination.
  3. Use compressed air in order to remove debris from the spark plug cavity.
    4. NOTE: Allow the engine to cool before removing the spark plugs. Attempting to remove the spark plugs from a hot engine may cause the plug threads to seize, causing damage to cylinder head threads.
  4. Remove the spark plug.
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