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Home >> Buick >> 2007 >> Lucerne CX >> Repair and Diagnosis >> External Pages >> Different car >> Section 120 (Engine Mechanical - 3.8L) >> Repair Instructions >> On-Vehicle Repair Instructions >> Replacing Cylinder Head - Right >> Removal

Replacing Cylinder Head - Right: Removal

WARNING: This page is about a different car, the 2006 Buick LaCrosse and 2006 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: View Of HO2S Electrical Connector & Right Exhaust Manifold
    GM911055Courtesy of GENERAL MOTORS CORP.
  1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnect/Connect Procedure (L26) in Engine Electrical.
  2. Remove the fuel injector sight shield. Refer to Replacing Fuel Injector Sight Shield .
  3. Disconnect the heated oxygen sensor (HO2S) electrical connector.
  4. Remove the HO2S from the right exhaust manifold.
  5. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  6. Drain the cooling system. Refer to Draining and Filling Cooling System (L26 Static Fill) or Draining and Filling Cooling System (L26, LY7, GE 47716 Fill) in Engine Cooling.
  7. Drain the engine oil.
  8. Remove the catalytic converter from the right exhaust manifold. Refer to Catalytic Converter Replacement in Engine Exhaust.
    9. Fig 2: Right Exhaust Manifold Heat Shield & Bolts
    GM911016Courtesy of GENERAL MOTORS CORP.
  9. Remove the right exhaust manifold heat shield bolts (2).
  10. Remove the right exhaust manifold heat shield (1).
    11. Fig 3: EGR Valve Adapter Bolt & Right Exhaust Manifold
    GM911025Courtesy of GENERAL MOTORS CORP.
  11. Remove the exhaust gas recirculation (EGR) valve adapter bolt (1) from the right exhaust manifold.
  12. Lower the vehicle.
  13. Remove the drive belt tensioner. Refer to Replacing Drive Belt Tensioner .
    14. Fig 4: View Of Power Steering Pump And Mounting Bolts
    GM282122Courtesy of GENERAL MOTORS CORP.
  14. Remove the power steering pump bolts and reposition the power steering pump.
  15. Rotate the engine to access the right cylinder head. Refer to Rotating the Engine for Service Access .
  16. Remove the right spark plugs from the right cylinder head. Refer to Spark Plug Replacement in Engine Controls - 3.8L.
  17. Remove the lower intake manifold. Refer to Replacing Intake Manifold - Lower .
  18. Remove the EGR valve inlet adapter pipe from the right cylinder head. Refer to Exhaust Gas Recirculation (EGR) Inlet Pipe Replacement in Engine Controls - 3.8L.
  19. Remove the right exhaust manifold. Refer to Exhaust Manifold Replacement - Right in Engine Exhaust.
  20. Remove the right valve rocker arm cover. Refer to Replacing Valve Rocker Arm Cover - Right .
  21. Remove the right rocker arms and push rods. Refer to Replacing Valve Rocker Arm and Push Rod .
    22. Fig 5: Right Cylinder Head & Bolts
    GM153598Courtesy of GENERAL MOTORS CORP.
  22. Remove the right cylinder head bolts. Discard the cylinder head bolts.
  23. Remove the right cylinder head.
    24. Fig 6: Right Cylinder Head Gasket
    GM190560Courtesy of GENERAL MOTORS CORP.
  24. Remove the cylinder head gasket.
  25. Remove the caps, the springs, the valves and the seals from the cylinder head. Refer to Disassembling Cylinder Head .
  26. Clean the gasket mating surfaces on the cylinder head, the engine block and the intake manifold.
  27. Clean the cylinder block bolt hole threads.
  28. Inspect the engine block. Refer to Engine Block Cleaning & Inspection .
  29. Inspect the cylinder head. Refer to Cylinder Head Cleaning & Inspection .
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