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Home >> GMC >> 2018 >> Acadia Denali, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 7 (Engine Mechanical - 2.5L (LCV)) >> Repair Instructions - On Vehicle >> Cylinder Head Replacement >> Installation Procedure

Installation Procedure

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  1. For cylinder head assemble. Cylinder Head Assemble 
  2. GM2726774Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Do not use any sealing material.

    Install the cylinder head gasket (3) to the block.

  3. Install the cylinder head (2). Ensure the number 1 cylinder is at top dead center (TDC). The key on the crankshaft should be on top in the 12 o'clock position.
  4. Fig 1: Cylinder Head Bolts With Loosening/Tightening Sequence
    GM2726776Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Refer to Fastener Caution .

    NOTE:

    Always use NEW cylinder head bolts.

    Install the cylinder head bolts.

    1. First Pass:  tighten the bolts in sequence to 30 N.m (22 lb ft).
    2. Final Pass:  tighten the bolts an additional 190 degrees in sequence using the EN 45059  meter.
  5. GM3789765Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Support engine as necessary from underneath while repositioning the engine support fixture. Engine Support Fixture 

    Reposition the engine support fixture lift hook from the J-36857  Engine Lift Bracket (2) to the engine lift bracket (3).

  6. Remove the J-36857  Engine Lift Bracket (2) and fastener (1) from the engine block.
  7. Thermostat Bypass Pipe - Install - Thermostat Bypass Pipe Replacement (LCV)
  8. GM2810896Courtesy of GENERAL MOTORS COMPANY

    Reconnect ground wire.

  9. Connect the hoses at the water outlet (2). Water Outlet Replacement (LCV)
  10. Install ground wire.
  11. Connect the exhaust camshaft position sensor. Camshaft Position Sensor Replacement - Exhaust
  12. Connect the intake camshaft position sensor. Camshaft Position Sensor Replacement - Intake
  13. Install the intake and exhaust camshaft, bearing cap and lash adjuster. Intake and Exhaust Camshaft, Bearing Cap, and Lash Adjuster Removal 
  14. Install the timing chain and tensioner. Camshaft Timing Chain and Tensioner Replacement 
  15. GM4341675Courtesy of GENERAL MOTORS COMPANY

    Install the fuel pump. (2) Fuel Pump Replacement

  16. Install the engine front cover. Engine Front Cover Replacement 
  17. Install the exhaust manifold. Exhaust Manifold Replacement (LCV)
  18. GM2191843Courtesy of GENERAL MOTORS COMPANY

    Install the intake manifold. Intake Manifold Replacement 

  19. Install the camshaft cover. Camshaft Cover Replacement 
  20. Refill the engine with NEW oil. Engine Oil and Oil Filter Replacement 
  21. Refill the coolant system. Cooling System Draining and Filling (GE-47716)Cooling System Draining and Filling (Static)
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