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Home >> Cadillac >> 2003 >> Escalade EXT >> Repair and Diagnosis >> External Pages >> Different car >> Section 464 (Engine Control System - 4.8L, 5.3L & 6.0L (Introduction)) >> Repair Instructions >> Spark Plug Replacement >> Installation Procedure
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Installation Procedure

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    Fig 1: View Of Spark Plug And Sparkplug Seat
    GM14824Courtesy of GENERAL MOTORS CORP.
  1. Correctly position the spark plug washer.
  2. Inspect the spark plug gap. Adjust the gap as needed.

    Specification:  Spark plug gap: 1.016 mm (0.040 in)

  3. Hand start the spark plug in the corresponding cylinder.
    NOTE: Refer to Fastener Notice in Cautions and Notices.
  4. Tighten the spark plug.

    Tighten: 

    • Tighten the plug to 15 N.m (11 lb ft) for used heads.
    • Tighten the plug to 20 N.m (15 lb ft) for NEW heads.

  5. Install the spark plug wire. Refer to Spark Plug Wire Replacement .
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