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Home >> Buick >> 2007 >> Lucerne CX >> Repair and Diagnosis >> External Pages >> Different car >> Section 237 (Engine Mechanical - 3.9L) >> Repair Instructions >> On-Vehicle Repair Instructions >> Cylinder Head Replacement - Left Side >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2006 Pontiac Montana SV6, 2006 Chevrolet Uplander, and 2006 Buick Terraza. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Head gaskets are specific for right hand and left hand applications and also must be installed with the correct side facing up. Note the markings (1) on the head gaskets for proper installation. Failure to do so may lead to engine damage.
Fig 1: Identifying Proper Cylinder Head Gasket Installation
GM1557858Courtesy of GENERAL MOTORS CORP.
  1. Clean the gasket mating surfaces.
  2. Install left spark plugs. Refer to SPARK PLUG REPLACEMENT .
  3. Install the cylinder head locator dowel pins, if necessary.
  4. Inspect the cylinder head locator dowel pins for proper installation.
    5. Fig 2: View Of Cylinder Head Gasket And Alignment Pins
    GM54362Courtesy of GENERAL MOTORS CORP.
  5. Install a NEW cylinder head gasket.
  6. Install the cylinder head onto the locator pins and the engine.
    7. NOTE: This component uses torque-to-yield bolts. When servicing this component do not reuse the bolts, New torque-to-yield bolts must be installed. Reusing used torque-to-yield bolts will not provide proper bolt torque and clamp load. Failure to install NEW torque-to-yield bolts may lead to engine damage.
    Fig 3: View Of Cylinder Head
    GM52299Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to FASTENER NOTICE in Cautions and Notices.
  7. Install the NEW cylinder head bolts finger tight.
    8. Fig 4: View Of Cylinder Head Bolt Tightening Sequence
    GM826677Courtesy of GENERAL MOTORS CORP.
  8. Tighten the cylinder head bolts.

    Tighten:   Tighten the bolts in sequence to 60 Nm (44 lb ft) plus an additional 95 degrees using the J 45059  .

  9. Install the oil level indicator tube. Refer to Oil Level Indicator and Tube Replacement .
  10. Install the exhaust manifold. Refer to EXHAUST MANIFOLD REPLACEMENT - LEFT (3.9L) .
    11. Fig 5: View Of Left Spark Plug/Coil Harness
    GM1582091Courtesy of GENERAL MOTORS CORP.
  11. Install lower intake manifold. Refer to Intake Manifold Replacement - Lower .
  12. Fill engine with oil. Refer to Engine Oil and Oil Filter Replacement .
  13. Fill the cooling system. Refer to DRAINING AND FILLING COOLING SYSTEM (STATIC FILL) .
  14. Inspect for leaks.
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