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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1021 (Engine Mechanical - 8.1L) >> 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, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the intake manifold. Refer to Intake Manifold Replacement .
  2. Remove the water crossover. Refer to Coolant Crossover Pipe Replacement (8.1L) in Engine Cooling.
  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 (1 and 5) and ground strap (4) from the cylinder head.
    6. Fig 1: View Of Engine Harness Grounds And CKP Sensor And Oil Pressure Sensor Electrical Connectors
    GM1235690Courtesy of GENERAL MOTORS CORP.
  6. Remove the exhaust manifold. Refer to Exhaust Manifold Replacement - Left (8.1L Engine) in Engine Exhaust.
  7. Remove and discard the cylinder head bolts (1, 2, and 3).
    8. Fig 2: View Of Left Cylinder Head Bolts
    GM470914Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Place the cylinder head on two wood blocks to prevent damage to the sealing surfaces.
  8. Remove the cylinder head.
    9. Fig 3: View Of Left Cylinder Head And Alignment Pin
    GM470916Courtesy of GENERAL MOTORS CORP.
  9. Remove and discard the cylinder head gasket.
    10. Fig 4: View Of Left Cylinder Head Gasket And Alignment Pins
    GM470974Courtesy of GENERAL MOTORS CORP.
  10. Clean and inspect the cylinder head. Refer to Cylinder Head Cleaning and Inspection .
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