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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 229 (Engine Control System & Fuel - Hybrid (Hp2) 6.0L (LFA) - Introduction (2 Of 2)) >> Repair Instructions >> Spark Plug Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2008 GMC Yukon and 2008 Chevrolet Tahoe. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: View Of Spark Plug & Spark Plug 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. NOTE: Refer to Fastener Notice .
  4. Tighten the spark plug.

    Tighten:  Tighten the plug to 15 N.m (11 lb ft).

    5. Fig 2: View Of Spark Plug Wires
    GM1707125Courtesy of GENERAL MOTORS CORP.
  5. Install the spark plug wire to the spark plug.
  6. Inspect the spark plug wire for proper installation:
    1. Push sideways on each boot in order to inspect the seating.
    2. Reinstall any loose boot.
  7. If a right side spark plug(s) was replaced, install the right front wheelhouse liner. Refer to Front Wheelhouse Liner Replacement - Right Side .
  8. If a right side spark plug(s) was replaced, perform the service reconnect. Refer to High Voltage Enabling .
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