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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1401 (Engine Mechanical - 6.6L (2 Of 5)) >> Repair Instructions - On Vehicle >> Cylinder Head Replacement - Left Side >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2009 GMC Sierra, 2009 GMC Cab & Chassis Sierra, 2009 Chevrolet Silverado, and 2009 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: View Of Left Cylinder Head Gasket
    GM1336110Courtesy of GENERAL MOTORS CORP.
    CAUTION: The left and right cylinder head gaskets are not interchangeable. Improper placement of the cylinder head gasket will block coolant and oil passages. Blocked coolant and oil passages will cause severe engine damage.
  1. Install the cylinder head gasket of the correct grade. Refer to Cylinder Head Gasket Selection Specifications .
  2. Install the cylinder head.
    3. Fig 2: View Of Cylinder Head Bolt Tightening Sequence
    GM663831Courtesy of GENERAL MOTORS CORP.
    CAUTION: This component uses bolts with a preapplied molybdenum disulfide coating for thread lubrication. Do not remove the coating or use any additional lubricant. Improperly lubricated threads will adversely affect the bolt torque and clamp load. Improper bolt torque and clamp load can lead to engine damage.
  3. Install NEW M12 cylinder head bolts.
  4. Reuse the M8 cylinder head bolts.
    5. CAUTION: Refer to Fastener Caution .
  5. Tighten the cylinder head bolts in the following steps using the sequence shown:

    Tighten: 

    1. Tighten the M12 bolts a first pass to 50 N.m (37 lb ft).
    2. Tighten the M12 bolts a second pass to 80 N.m (59 lb ft)
    3. Tighten the M12 bolts a third pass to 60 degrees, using J 45059  .
    4. Tighten the M12 bolts a final pass to 60 degrees, using J 45059  .
    5. Tighten the M8 bolts to 25 N.m (18 lb ft).

  6. Install the glow plugs. Refer to Glow Plug Replacement - Bank 2 .
  7. Install the valve rocker arm shaft, pushrods, and valve bridges. Refer to Valve Rocker Arm, Shaft, and Push Rod Replacement .
  8. Install the exhaust manifold. Refer to Exhaust Manifold Installation - Left Side .
  9. Install the intake manifold. Refer to Intake Manifold Replacement - Left Side .
  10. Install the thermostat housing crossover. Refer to Thermostat Housing Crossover Replacement (LMM) .
  11. Install the engine assembly. Refer to Engine Replacement .
  12. Road test the vehicle for normal operation.
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