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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1137 (Engine Controls And Fuel - 3.6L - Introduction (2 Of 2)) >> Repair Instructions >> Ignition Coil Replacement - Bank 2 (LP1, LY7) >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2008 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.
  1. Turn the ignition OFF.
  2. Remove the engine cover. Refer to Fuel Injector Sight Shield Replacement (LP1, LY7) or Fuel Injector Sight Shield Replacement (LLT) .
    3. IMPORTANT: Do NOT disconnect the fuel pipes and/or hoses.
  3. If you are replacing the ignition coil for cylinder 2, 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 - Bank 2
    GM887884Courtesy of GENERAL MOTORS CORP.
  4. Remove the ignition coil electrical connector(s).
    5. Fig 3: Identifying Left Cylinder Head Ignition Coils
    GM868186Courtesy of GENERAL MOTORS CORP.
  5. Remove the ignition coil bolt(s).
  6. Remove the ignition coil(s).
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