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Home >> Hummer >> 2010 >> H3 Alpha >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls And Fuel - 4.8L, 5.3L, 6.0L, 6.2L, Or 7.0L - Repair Instructions >> Repair Instructions >> Spark Plug Replacement >> Installation Procedure

Installation Procedure

    Fig 1: Spark Plug & Seat
    GM14824Courtesy of GENERAL MOTORS CORP.
  1. Inspect the spark plug gap. Adjust the gap as needed. Refer to Ignition System Specifications .
  2. Hand start the spark plug in the corresponding cylinder.
    3. CAUTION: Refer to Fastener Caution .
  3. Tighten the spark plug.

    Tighten:  Tighten the plug to 20 N.m (15 lb ft).

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