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Home >> Buick >> 2015 >> Verano Premium, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 2 (Engine Mechanical - 2.4L (Lea)) >> Repair Instructions - On Vehicle >> Cylinder Head Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different variant/trim than selected.
    Fig 1: Cylinder Head, Gasket & Bolts
    GM2557067Courtesy of GENERAL MOTORS COMPANY
  1. Install the cylinder head (3) and the NEW cylinder head gasket (4).
  2. Install the 14 cylinder head bolts (1) and (2).
    3. Fig 2: Cylinder Head Bolt Tightening Sequence
    GM2557068Courtesy of GENERAL MOTORS COMPANY
  3. Fasten the cylinder head bolts handtighten in sequence as shown.
    4. CAUTION:

    Refer to Fastener Caution .

  4. Tighten the NEW cylinder head bolts a first pass in the sequence as shown to 30 N.m (22 lb ft).
    5. CAUTION:

    Refer to Torque-to-Yield Fastener Caution .

  5. Tighten the cylinder head bolts a final pass in the sequence shown an additional 155 degrees, using the EN-45059  meter.
  6. Tighten the 4 cylinder head front bolts to 35 N.m (26 lb ft).
  7. Install the hydraulic valve lash adjuster. Refer to Hydraulic Valve Lash Adjuster Replacement .
  8. Install the fuel injection fuel rail assembly. Refer to Fuel Injection Fuel Rail Assembly Replacement .
  9. Install the intake manifold. Refer to Intake Manifold Replacement .
  10. Install the exhaust manifold. Refer to Exhaust Manifold Replacement (2.4L LEA) .
  11. Install the intake camshaft. Refer to Intake Camshaft Replacement .
  12. Install the exhaust camshaft. Refer to Exhaust Camshaft Replacement .
  13. Install the radiator surge tank inlet hose. Refer to Radiator Surge Tank Inlet Hose/Pipe Replacement .
  14. Install the three-way catalytic converter. Refer to Three-Way Catalytic Converter Replacement (2.4L LEA) .
  15. Replace the engine oil filter and the engine oil. Refer to Engine Oil and Oil Filter Replacement .
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