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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 681 (Engine Mechanical - 8.1L (On-Vehicle)) >> Repair Instructions >> Cylinder Head Replacement - Left >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2002 GMC Yukon XL, 2002 Chevrolet Suburban, and 2002 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: EGR Valve, Oil Pressure Sensor Electrical Connector & Engine Harness Ground Bolts & Straps
    GM750530Courtesy of GENERAL MOTORS CORP.
  1. Drain the cooling system. Refer to DRAINING AND FILLING COOLING SYSTEM in Engine Cooling.
  2. Remove the intake manifold. Refer to Intake Manifold Replacement .
  3. Remove the valve rocker arms and pushrods. Refer to Valve Rocker Arm and Push Rod Replacement .
  4. Remove the engine harness ground bolts.
  5. Reposition the engine harness grounds (3 and 4) and ground strap (5) from the cylinder head.
    6. Fig 2: View Of Cylinder Left Head Bolts
    GM470914Courtesy of GENERAL MOTORS CORP.
  6. Remove the water crossover. Refer to WATER CROSSOVER REPLACEMENT (8.1L ENGINE) in Engine Cooling.
  7. Remove the exhaust manifold. Refer to EXHAUST MANIFOLD REPLACEMENT - LEFT (8.1L ENGINE) in Engine Exhaust.
  8. Remove and discard the cylinder head bolts (1, 2, and 3).
    9. Fig 3: View Of Left Cylinder Head And Alignment Pin
    GM470916Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Place the cylinder head on two wood blocks to prevent damage to the sealing surfaces.
  9. Remove the cylinder head.
    10. Fig 4: View Of Left Cylinder Head Gasket And Alignment Pins
    GM470974Courtesy of GENERAL MOTORS CORP.
  10. Remove and discard the cylinder head gasket.
  11. Clean and inspect the cylinder head. Refer to Cylinder Head Cleaning and Inspection in Engine Mechanical - 8.1L Unit Repair.
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