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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 429 (Engine Mechanical - 1.8L (LNK)) >> Repair Instructions >> On-Vehicle Repair Instructions >> Cylinder Head Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2003 Pontiac Vibe. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the left engine splash shield. Refer to SPLASH SHIELD REPLACEMENT - ENGINE - LEFT .
  2. Remove the right engine splash shield. Refer to SPLASH SHIELD REPLACEMENT - ENGINE - RIGHT .
  3. Drain the engine oil.
  4. Remove the engine cover.
    CAUTION: Refer to BATTERY DISCONNECT CAUTION .
  5. Disconnect the battery ground cable.
  6. Remove the air cleaner assembly.
  7. Disconnect the accelerator cable.
  8. Relieve the fuel pressure. Refer to FUEL SYSTEM PRESSURE RELEASE .
  9. Remove the serpentine drive belt. Refer to Drive Belt Replacement .
  10. Remove the alternator. Refer to GENERATOR .
  11. Remove the timing chain and sprockets. Refer to Timing Chain and Sprockets Removal .
  12. Remove the exhaust pipe.
    Fig 1: Removing Exhaust Pipe
    G01546405Courtesy of GENERAL MOTORS CORP.
  13. Remove the exhaust manifold bracket nut and bolts.
    Fig 2: Removing Exhaust Manifold Bracket Nut & Bolts
    G01546406Courtesy of GENERAL MOTORS CORP.
  14. Remove the ignition coils. Refer to IGNITION COIL .
  15. Remove the spark plugs. Refer to SPARK PLUG .
  16. Disconnect the positive crankcase ventilation (PCV) hoses from the cylinder head cover.
    Fig 3: Disconnecting Positive Crankcase Ventilation Hoses
    G01546407Courtesy of GENERAL MOTORS CORP.
  17. Remove the throttle body. Refer to THROTTLE BODY ASSEMBLY .
  18. Remove the fuel injectors. Refer to FUEL RAILS & FUEL INJECTORS .
  19. Remove 1 bolt and 1 nut from the accelerator cable bracket.
  20. Disconnect the ECT sensor and camshaft position sensor electrical connectors.
  21. Disconnect the VVT and the VVTL electrical connectors.
  22. Disconnect the oil pressure switch and 2 ground electrical connectors.
    Fig 4: Removing Components
    G01546408Courtesy of GENERAL MOTORS CORP.
  23. Remove 2 bolts from the engine wire harness bracket.
  24. Remove the intake manifold insulator.
  25. Remove the intake manifold. Refer to Intake Manifold Replacement .
  26. Remove the camshaft position sensor. Refer to CAMSHAFT POSITION SENSOR .
  27. Remove the ECT sensor. Refer to ENGINE COOLANT TEMPERATURE SENSOR .
  28. Remove the PCV valve and grommet. Refer to Positive Crankcase Ventilation (PCV) Valve Replacement .
  29. Remove the intake camshaft. Refer to Camshaft Replacement - Intake .
  30. Remove the exhaust camshaft. Refer to Camshaft Replacement - Exhaust .
  31. Remove the bolt for the oil control valve.
  32. Remove the bolt, gasket and oil control valve filter.
  33. Disconnect the upper radiator hose from the water house union.
  34. Disconnect the heater hose from the water hose union.
  35. Remove the following items in sequence:
    1. 35.1. The cylinder head bolts
    2. 35.2. The cylinder head washers
    Fig 5: Identifying Cylinder Head Bolt Removal Sequence
    G01546409Courtesy of GENERAL MOTORS CORP.
  36. Remove the water bypass to cylinder block bolt.
  37. Remove the cylinder head.
    Fig 6: Removing Cylinder Head
    G01546410Courtesy of GENERAL MOTORS CORP.
  38. Remove the following items.
    • The upper exhaust manifold heat insulator bolts (1) and heat insulator.
    • The exhaust manifold nuts (2) and bolts (3).
    • The exhaust manifold (4) and gasket.
    • The lower exhaust manifold heat insulator bolts (5) and heat insulator.
    Fig 7: Locating Exhaust Manifold Components
    G01546411Courtesy of GENERAL MOTORS CORP.
  39. Remove the cylinder head gasket (1).
    Fig 8: Removing Cylinder Head Gasket
    G01546412Courtesy of GENERAL MOTORS CORP.
  40. Clean the cylinder block mating surfaces.
    Fig 9: Cleaning Cylinder Block Mating Surfaces
    G01546413Courtesy of GENERAL MOTORS CORP.
  41. Clean the cylinder head mating surface.
    Fig 10: Cleaning Cylinder Head Mating Surface
    G01546414Courtesy of GENERAL MOTORS CORP.
  42. Clean the timing chain cover mating surface.
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