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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 144 (Engine Mechanical - 4.3L) >> Repair Instructions >> On-Vehicle Repair Instructions >> Cylinder Head Replacement - Right >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2003 GMC Savana and 2003 Chevrolet Chevy Express. However, it is still accessible from the selected car via links, so may be relevant.
  1. Disconnect the battery negative cable. Refer to Battery Negative Cable Disconnect/Connect Procedure .
  2. Remove the engine cover. Refer to Engine Cover Replacement in Interior Trim .
  3. Drain the engine coolant. Refer to DRAINING AND FILLING COOLING SYSTEM .
  4. Remove the fan shroud. Refer to FAN SHROUD REPLACEMENT .
  5. Remove the generator mounting bracket. Refer to Generator Bracket Replacement (4.3L Engine)  or GENERATOR BRACKET REPLACEMENT (4.8L, 5.3L, AND 6.0L ENGINES) .
  6. Remove the generator mounting bracket stud from the cylinder head.
    Fig 1: Removing Generator Mounting Bracket Stud
    G02077802Courtesy of GENERAL MOTORS CORP.
  7. Remove the lower intake manifold. Refer to Intake Manifold Replacement - Lower .
  8. Remove the exhaust manifold. Refer to EXHAUST MANIFOLD REPLACEMENT-RIGHT (4.3L) or EXHAUST MANIFOLD REPLACEMENT - RIGHT (4.8L, 5.3L, 6.0L) .
  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 .
    Fig 2: Removing Ground Wires At Rear Of Cylinder Head
    G02077803Courtesy of GENERAL MOTORS CORP.
  11. Remove the spark plugs.
    Fig 3: Removing Spark Plugs
    G02077804Courtesy of GENERAL MOTORS CORP.
  12. Remove the rear bolt and the spark plug wire support.
    Fig 4: Removing Rear Bolt & Spark Plug Wire Support
    G02077805Courtesy of GENERAL MOTORS CORP.
  13. Remove the cylinder head bolts.
    Fig 5: Removing Cylinder Head Bolts
    G02077806Courtesy of GENERAL MOTORS CORP.
  14. Remove the cylinder head.
    Fig 6: Removing Cylinder Head
    G02077807Courtesy of GENERAL MOTORS CORP.
  15. Remove and discard the cylinder head gasket.
    Fig 7: Removing Cylinder Head Gasket
    G02077808Courtesy 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.
    CAUTION: 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  .
    Fig 8: Removing Dowel Pins
    G02077809Courtesy of GENERAL MOTORS CORP.
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