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Home >> Chevrolet >> 2017 >> Traverse LS Base >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Controls And Fuel - 3.6L (LLT) - Repair Instructions >> Repair Instructions >> Spark Plug Replacement >> Installation Procedure
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Installation Procedure

    Fig 1: Spark Plugs
    GM902884Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Use only the spark plugs specified for use in the vehicle. Do not install spark plugs that are either hotter or colder than those specified for the vehicle. Installing spark plugs of another type can severely damage the engine.

  1. If reusing spark plugs, refer to Spark Plug Inspection .
    2. CAUTION:

    Be sure that the spark plug threads smoothly into the cylinder head and the spark plug is fully seated. Use a thread chaser, if necessary, to clean threads in the cylinder head. Cross-threading or failing to fully seat the spark plug can cause overheating of the plug, exhaust blow-by, or thread damage.

    CAUTION:

    Refer to Fastener Caution .

    NOTE:

    If using new spark plugs, do not attempt to check gap. Plugs come pre-gapped.

  2. Install the spark plug and tighten to 18 N.m (13 lb ft)..
  3. Install the ignition coil(s). Refer to Ignition Coil Replacement - Bank 1 , and/or Ignition Coil Replacement - Bank 2 .
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