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Home >> Cadillac >> 2017 >> CTS V >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Controls And Fuel - 6.2L (LT4) - Repair Instructions >> Repair Instructions >> Spark Plug Replacement >> Removal Procedure

Removal Procedure

  1. If replacing the bank 2 spark plugs, remove the radiator surge tank. refer to Radiator Surge Tank Replacement (LT4) .
  2. Remove the spark plug wires from the spark plugs. Refer to Spark Plug Wire Replacement .
  3. Loosen each spark plug 1 or 2 turns.
  4. Use a brush, or use compressed air in order to remove any dirt from the spark plugs.
    5. Fig 1: Spark Plugs
    GM3397282Courtesy of GENERAL MOTORS COMPANY
  5. Remove the spark plugs (1) one at a time and place each plug in a tray marked with the corresponding cylinder numbers.
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