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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 10 (Engine Mechanical - 8.1L) >> Repair Instructions >> On-Vehicle Repair Instructions >> Cylinder Head Replacement - Right >> Removal Procedure

Removal Procedure

WARNING: This page is about a different variant/trim than selected.
    Fig 1: View Of ECT Sensor Electrical Connector
    GM843867Courtesy of GENERAL MOTORS CORP.
  1. Drain the cooling system. Refer to Draining and Filling Cooling System (w/RPO HP2) or Draining and Filling Cooling System (w/o RPO HP2) 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 coolant temperature (ECT) sensor clip from the bracket.
  5. Remove the ECT sensor from the cylinder head.
    6. Fig 2: View Of Indicator Tube Bracket
    GM843863Courtesy of GENERAL MOTORS CORP.
  6. Remove the indicator tube bolt.
  7. Remove the indicator tube bracket.
  8. Remove the O-ring seal from the indicator tube.
    9. Fig 3: View Of Heater Hose Bracket & Bolts
    GM750695Courtesy of GENERAL MOTORS CORP.
  9. Remove the heater inlet and outlet hoses from the hose bracket.
  10. Remove the heater hose bracket bolts and bracket from the cylinder head.
  11. Remove the water crossover. Refer to Coolant Crossover Pipe Replacement (8.1L) in Engine Cooling.
  12. Remove the exhaust manifold. Refer to Exhaust Manifold Replacement - Right (4.3L Engine) or Exhaust Manifold Replacement - Right (4.8L, 5.3L, and 6.0L Engines) or Exhaust Manifold Replacement - Right (6.6L (LLY) Engine) or Exhaust Manifold Replacement - Right (8.1L Engine) in Engine Exhaust.
    13. Fig 4: View Of Right Cylinder Head Bolts
    GM470989Courtesy of GENERAL MOTORS CORP.
  13. Remove and discard the cylinder head bolts (1, 2, and 3).
    14. Fig 5: View Of Right Cylinder Head And Alignment Pin
    GM470991Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Place the cylinder head on two wood block to prevent damage to the sealing surface.
  14. Remove the cylinder head.
    15. Fig 6: View Of Right Cylinder Head Gasket And Alignment Pins
    GM470992Courtesy of GENERAL MOTORS CORP.
  15. Remove and discard the cylinder head gasket.
  16. Clean and inspect the cylinder head. Refer to Cylinder Head Cleaning and Inspection .
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