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Home >> Pontiac >> 2009 >> G8 GXP, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System & Fuel System - 6.0L, 6.2L - Introduction >> Repair Instructions >> Spark Plug Replacement >> Installation Procedure
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Installation Procedure

    Fig 1: Locating Spark Plug Gap
    GM1950749Courtesy of GENERAL MOTORS CORP.
  1. Inspect each spark plug gap. Adjust each plug as needed.

    Specification:  Spark plug gap: 1.524 mm (0.060 in).

  2. Hand start the spark plugs in the corresponding cylinders.
    3. CAUTION: Refer to Fastener Caution .
  3. Tighten the spark plugs. Tighten the engine spark plug on a NEW cylinder head to 20 N.m (15 lb ft) and the engine spark plug on subsequent installations to 15 N.m (11 lb ft).
  4. Install the spark plug wires. Refer to Spark Plug Wire Replacement .
  5. Install the engine cover. Refer to Engine Cover Replacement .
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