LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Hummer >> 2009 >> H3 Alpha >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls And Fuel - 5.3L - Introduction >> Repair Instructions >> Spark Plug Replacement >> Installation Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Installation Procedure

    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. Refer to Ignition System Specifications .
  3. Hand start the spark plug in the corresponding cylinder.
    4. CAUTION: Refer to Fastener Caution .
  4. Tighten the spark plug.

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

  5. Install the spark plug wire. Refer to Spark Plug Wire Replacement .
scientia non olet · About LEMON Manuals