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Home >> GMC >> 2004 >> Sierra 2500 HD, 2D Pickup, 8.1 G, RWD, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - 8.1L (Introduction) >> Repair Instructions >> Spark Plug Wire Replacement >> Installation Procedure

Installation Procedure

  1. Install the spark plug wire at the ignition coil.
    Fig 1: Spark Plug Wire At Ignition Coil
    GM843846Courtesy of GENERAL MOTORS CORP.
  2. Install the spark plug wire to the spark plug.
  3. Inspect the wire for proper installation:
    1. Push sideways on the boot in order to inspect the seating.
    2. Reinstall any loose boot.
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