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Home >> Chevrolet >> 2007 >> Chevy Express G2500, Van Cargo, 6.6 6 >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 20 (Engine Mechanical - 4.3L) >> Repair Instructions - On Vehicle >> Cylinder Head Replacement - Right Side >> Removal Procedure

Removal Procedure

WARNING: This page is about a different variant/trim than selected.
    Fig 1: View Of Generator Bracket Stud
    GM475837Courtesy of GENERAL MOTORS CORP.
  1. Disconnect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection .
  2. Remove the engine cover. Refer to Engine Cover Replacement .
  3. Drain the engine coolant. Refer to Draining and Filling Cooling System (Static Fill) or Draining and Filling Cooling System (Vac N Fill) .
  4. Remove the fan shroud. Refer to Engine Coolant Fan Upper Shroud Replacement (4.3L, 4.8L, 5.3L, 6.0L) and Engine Coolant Fan Lower Shroud Replacement (4.3L, 4.8L, 5.3L, 6.0L) .
  5. Remove the generator mounting bracket. Refer to Generator Bracket Replacement (4.3L) .
  6. Remove the generator mounting bracket stud from the cylinder head.
  7. Remove the lower intake manifold. Refer to Lower Intake Manifold Replacement .
  8. Remove the exhaust manifold. Refer to Exhaust Manifold Replacement - Right Side (4.3L) .
    9. Fig 2: Rear Of Cylinder Head Ground Wires
    GM375426Courtesy of GENERAL MOTORS CORP.
  9. Remove the ground wires at the rear of the cylinder head.
  10. Remove the valve pushrods. Refer to Valve Rocker Arm and Push Rod Replacement .
    11. Fig 3: Locating Spark Plugs
    GM328586Courtesy of GENERAL MOTORS CORP.
  11. Remove the spark plugs.
    12. Fig 4: Spark Plug Wire Support
    GM328590Courtesy of GENERAL MOTORS CORP.
  12. Remove the rear bolt and the spark plug wire support.
    13. Fig 5: Locating Cylinder Head Bolts (Right)
    GM480537Courtesy of GENERAL MOTORS CORP.
  13. Remove the cylinder head bolts.
    14. Fig 6: Removing/Installing Cylinder Head (Right)
    GM480538Courtesy of GENERAL MOTORS CORP.
  14. Remove the cylinder head.
    15. Fig 7: View Of Cylinder Head Gasket And Alignment Pins - Right
    GM334312Courtesy of GENERAL MOTORS CORP.
  15. Remove and discard the cylinder head gasket.
    16. Fig 8: Cylinder Head Locator Pins
    GM330553Courtesy of GENERAL MOTORS CORP.
  16. Remove the dowel pins (cylinder head locator), if required.
  17. Clean the engine block and the cylinder head sealing surfaces.
    18. NOTE: Clean all dirt, debris, and coolant from the engine block cylinder head bolt holes. Failure to remove all foreign material may result in damaged threads, improperly tightened fasteners or damage to components.
  18. Clean the cylinder head bolts and the engine block bolt holes.
  19. For further service to the cylinder head refer to the following: Cylinder Head Disassemble , Cylinder Head Cleaning and Inspection , Valve Guide Reaming/Valve and Seat Grinding  or Cylinder Head Assemble .
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