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Home >> Cadillac >> 2004 >> CTS Base, 3.2 N >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 4 (Engine Controls - 3.6L - Introduction) >> Repair Instructions >> Ignition Coil(s) Replacement - Bank 1 >> Removal Procedure

Removal Procedure

WARNING: This page is about a different variant/trim than selected.
  1. Turn the ignition OFF.
  2. Remove the engine cover. Refer to Fuel Injector Sight Shield Replacement in Engine Mechanical - 3.6L (LY7).
    3. IMPORTANT: Do NOT disconnect the fuel pipes and/or hoses.
  3. If you are replacing the ignition coil for cylinder 1 or 3, remove and reposition the intake manifold. Perform the following steps:
    1. Disconnect the air cleaner duct from the throttle body.
    2. Disconnect the positive crankcase ventilation (PCV) hose from the right bank camshaft cover.
      3. IMPORTANT: Do NOT separate the upper intake manifold from the lower intake manifold.
    3. Remove the intake manifold bolts.
      4. Fig 1: View Of Intake Manifold Brace & Bolts
      GM1306504Courtesy of GENERAL MOTORS CORP.
    4. Remove the intake manifold brace bolts (1 and 2) and the brace.
    5. Remove and reposition the upper intake manifold with the lower intake manifold in order to gain sufficient clearance for ignition coil removal.
    4. Fig 2: View Of Ignition Coil Electrical Connectors
    GM887888Courtesy of GENERAL MOTORS CORP.
  4. Remove the ignition coil electrical connector(s).
    5. Fig 3: Ignition Coil View
    GM860797Courtesy of GENERAL MOTORS CORP.
  5. Remove the ignition coil bolt(s).
  6. Remove the ignition coil(s).
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