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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1678 (Engine Mechanical - 6.6L (LMM) - Repair Instructions - On Vehicle) >> Cylinder Head Replacement - Left Side >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2010 GMC Sierra, 2010 GMC Cab & Chassis Sierra, 2010 Chevrolet Silverado, and 2010 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Cylinder Head Bolt Removal Sequence
    GM1336109Courtesy of GENERAL MOTORS CORP.
  1. Remove the engine assembly. Refer to Engine Replacement .
  2. Remove the thermostat housing crossover. Refer to Thermostat Housing Crossover Replacement (LMM) .
  3. Remove the intake manifold. Refer to Intake Manifold Replacement - Left Side .
  4. Remove the exhaust manifold. Refer to Exhaust Manifold Removal - Left Side .
  5. Remove the valve rocker arm shaft, pushrods, and valve bridges. Refer to Valve Rocker Arm, Shaft, and Push Rod Replacement .
  6. Remove the glow plugs. Refer to Glow Plug Replacement - Bank 2 .
  7. Remove the cylinder head bolts in the sequence shown.
  8. Discard the large M12 bolts.
    9. Fig 2: View Of Left Cylinder Head Gasket
    GM1336110Courtesy of GENERAL MOTORS CORP.
  9. Remove the cylinder head.
  10. Remove and discard the cylinder head gasket.
  11. Clean the sealing surface of the engine block and the cylinder head.
    CAUTION: 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.
  12. Clean the cylinder head bolt holes in the engine block.
  13. For service to the cylinder head refer to the following:
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