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Home >> GMC >> 2019 >> Sierra 2500 HD Base, 2D Pickup, Gas >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls And Fuel - 6.0L (L96 LC8) - Repair Instructions >> Repair Instructions >> Spark Plug Replacement >> Installation Procedure

Installation Procedure

  1. Inspect the spark plug gap. Adjust the gap as needed. Refer to Ignition System Specifications .
    GM14824Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    The spark plug comes pre-gapped. Do not change the spark plug gap from 1.01 mm (0.040 in).

  2. Hand start the spark plug in the corresponding cylinder.
    3. CAUTION:

    Refer to Fastener Caution .

  3. Tighten the spark plug to 15 N.m (11 lb ft).
  4. Install the spark plug wire to the spark plug.
    GM1707125Courtesy of GENERAL MOTORS COMPANY
  5. Inspect the spark plug wire for proper installation:
    1. Push sideways on each boot in order to inspect the seating.
    2. Reinstall any loose boot.
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