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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 947 (Engine Controls - 4.8L, 5.3L, & 6.0L (Introduction)) >> Repair Instructions >> Spark Plug Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  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. Fig 1: View Of Spark Plug And Sparkplug Seat
    GM14824Courtesy of GENERAL MOTORS CORP.
  5. Install the spark plug wire. Refer to Spark Plug Wire Replacement .
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