LEMON Manuals: Even more car manuals for everyone
Home >> Chevrolet >> 2001 >> Venture Base, Van Passenger >> Repair and Diagnosis >> External Pages >> Different car >> Section 516 (Engine Mechanical - 4.3L (LU3)) >> 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 Sonoma, 2003 GMC Jimmy, 2003 Chevrolet S10 Pickup, and 2003 Chevrolet Blazer. However, it is still accessible from the selected car via links, so may be relevant.
  1. Disconnect the negative battery cable. Refer to BATTERY NEGATIVE CABLE DISCONNECT/CONNECT PROCEDURE in Battery.
  2. Drain the cooling system. Refer to DRAINING AND FILLING COOLING SYSTEM in Engine Cooling.
  3. Remove the generator mounting bracket. Refer to GENERATOR in Generators & Regulators.
  4. Remove the generator mounting bracket stud from the cylinder head.
  5. Remove the lower intake manifold. Refer to Intake Manifold Replacement - Lower  .
  6. Remove the exhaust manifold. Refer to EXHAUST MANIFOLD REPLACEMENT - RIGHT in Engine Exhaust.
  7. Remove the oil level indicator and tube. Refer to Oil Level Indicator and Tube Replacement  .
  8. Remove the spark plug wire harness and spark plug wire support.
    Fig 1: Removing Generator Mounting Bracket Stud
    G01977525Courtesy of GENERAL MOTORS CORP.
    Fig 2: Removing Spark Plug Wire Harness
    G01977526Courtesy of GENERAL MOTORS CORP.
  9. Remove the bolt and the ground strap from the rear of the cylinder head.
    Fig 3: Removing Bolt & Ground Strap From Rear of Cylinder Head
    G01977527Courtesy of GENERAL MOTORS CORP.
  10. Remove the bolt and the ground wires from the rear of the cylinder head.
  11. Secure the ground strap and the ground wires out of the way.
  12. Remove the valve pushrods. Refer to Valve Rocker Arm and Push Rod Replacement  .
    Fig 4: Removing Ground Strap & Wires
    G01977528Courtesy of GENERAL MOTORS CORP.
  13. Remove the spark plugs. Refer to SPARK PLUGS in Service & Adjustment Specifications - 4.3L in Engine Performance.
    Fig 5: Removing Spark Plugs
    G01977529Courtesy of GENERAL MOTORS CORP.
  14. Remove the cylinder head bolts.
    Fig 6: Removing Cylinder Head Bolts
    G01977530Courtesy of GENERAL MOTORS CORP.
    NOTE: After removal, place the cylinder head on two wood blocks to prevent damage.
  15. Remove the cylinder head.
    Fig 7: Removing Cylinder Head
    G01977531Courtesy of GENERAL MOTORS CORP.
  16. Remove and discard the cylinder head gasket.
    Fig 8: Removing Cylinder Head Gasket
    G01977532Courtesy of GENERAL MOTORS CORP.
  17. Remove the dowel pins (cylinder head locator) (if required).
  18. Clean the engine block and the cylinder head sealing surfaces.
    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.
  19. Clean the cylinder head bolts and the engine block bolt holes.
  20. For further service to the cylinder head refer to the following:
scientia non olet · About LEMON Manuals