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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 992 (Engine Mechanical - 4.3L) >> Repair Instructions >> On-Vehicle Repair Instructions >> Cylinder Head Replacement - Left >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2004 GMC Sierra and 2004 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Drain the cooling system. Refer to Draining and Filling Cooling System (without HP2) in Engine Cooling.
  2. Remove the drive belt. Refer to Drive Belt Replacement .
  3. Remove the lower intake manifold. Refer to Intake Manifold Replacement - Lower .
  4. Remove the left exhaust manifold. Refer to Exhaust Manifold Replacement - Left (4.3L Engine) in Engine Exhaust.
  5. Remove the left side pushrods. Refer to Valve Rocker Arm and Push Rod Replacement .
  6. Remove the junction block bracket bolt.
    7. Fig 1: Removing Junction Block Bracket Bolt
    GM782670Courtesy of GENERAL MOTORS CORP.
  7. Position the bracket and wiring harness aside.
  8. Loosen the power steering (P/S) pump rear bracket nut.
  9. Remove the P/S pump rear bracket front nut.
  10. Remove the bolts and nut for the P/S pump bracket.
  11. Leave the air conditioning (A/C) compressor, if equipped, and the P/S pump on the bracket.
  12. Slide the P/S pump bracket off of the stud and set aside.
    13. Fig 2: View Of Power Steering Pump Bracket
    GM340090Courtesy of GENERAL MOTORS CORP.
  13. Remove the P/S pump bracket stud.
    14. Fig 3: Removing Power Steering Pump Bracket Stud
    GM475833Courtesy of GENERAL MOTORS CORP.
  14. Remove the harness ground bolt.
  15. Position the harness ground (4) and ground strap (5).
    16. Fig 4: View Of Ground Strap And CMP & Fuel Pump/Oil Pressure Sensor Connectors
    GM782680Courtesy of GENERAL MOTORS CORP.
  16. Remove the engine coolant temperature (ECT) sensor.
    17. Fig 5: View Of Engine Coolant Temperature Sensor
    GM387769Courtesy of GENERAL MOTORS CORP.
  17. Remove the spark plugs.
    18. Fig 6: Removing Spark Plugs
    GM328582Courtesy of GENERAL MOTORS CORP.
  18. Remove the spark plug wire support bolts and support.
    19. Fig 7: Removing Spark Plug Wire Support
    GM328588Courtesy of GENERAL MOTORS CORP.
  19. Remove the cylinder head bolts.
    20. Fig 8: Locating Cylinder Head Bolts (Left)
    GM480533Courtesy of GENERAL MOTORS CORP.
  20. Remove the cylinder head.
    21. Fig 9: Removing/Installing Cylinder Head (Left)
    GM480536Courtesy of GENERAL MOTORS CORP.
  21. Remove and discard the cylinder head gasket.
    22. Fig 10: View Of Cylinder Head Gasket And Alignment Pins - Left
    GM334299Courtesy of GENERAL MOTORS CORP.
  22. Remove the cylinder head locator pins, if necessary.
    23. Fig 11: Removing Cylinder Head Locator Pins
    GM330548Courtesy of GENERAL MOTORS CORP.
  23. Clean and inspect the cylinder head, if necessary. Refer to Cylinder Head Cleaning and Inspection .
  24. Disassemble the cylinder head, if necessary. Refer to Cylinder Head Disassemble .
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