Montana SV6 (2006), Relay, Terraza, Uplander (2005-2007)

Valve Covers

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Removal & Installation



3.5L Engine
Left Side
  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Drain the cooling system below the thermostat housing.
  4.  
  5. Remove the front ignition wiring harness at the upper intake manifold and spark plugs.
  6.  
  7. Remove the thermostat bypass pipe.
  8.  
  9. Disconnect the positive crankcase ventilation (PCV) hose.
  10.  
  11. Remove the valve cover mounting bolts and valve cover.
    NOTE
    Gently bump the end of the cover with the palm of your hand or soft rubber mallet if the cover is stuck.

  12.  
  13. Remove the valve cover gasket.
  14.  

To install:

  1. Trim the sealant away from the lower intake manifold gasket at the cylinder head to the lower intake manifold joints.
  2.  
  3. Clean the sealing surfaces of the cylinder head and valve cover with degreaser.

    Click image to see an enlarged view

    Fig. Apply sealant at the cylinder head to the lower intake manifold joints-3.5L engine

  4.  
  5. Apply sealant at the cylinder head to the lower intake manifold joints.
  6.  
  7. Install a new gasket to the valve cover. Ensure that the gasket is properly seated in the groove of the valve rocker arm cover.
  8.  
  9. Install the valve rocker cover. Tighten the mounting bolts to 89 inch lbs. (10 Nm).
  10.  
  11. The remainder of the removal is the reverse order of removal.
  12.  
  13. Refill the cooling system to the correct level.
  14.  

Right Side
  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Disconnect the negative battery cable.
  4.  
  5. Remove the accessory drive belt.
  6.  
  7. Remove the alternator and alternator mounting bracket.
  8.  
  9. Remove the right side spark plug wires.
  10.  
  11. Disconnect the vacuum hoses from the evaporative emission (EVAP) purge valve.
  12.  
  13. Remove the EVAP purge valve.
  14.  
  15. Remove the ignition coil bracket with the coils.
  16.  
  17. Remove the vacuum hose from the grommet in the right side valve cover.
  18.  
  19. Remove the valve cover mounting bolts and valve cover.
    NOTE
    Gently bump the end of the cover with the palm of your hand or soft rubber mallet if the cover is stuck.

  20.  
  21. Remove the valve cover gasket.
  22.  

To install:

  1. Trim the sealant away from the lower intake manifold gasket at the cylinder head to the lower intake manifold joints.
  2.  
  3. Clean the sealing surfaces of the cylinder head and valve cover with degreaser.
  4.  
  5. Apply sealant at the cylinder head to the lower intake manifold joints.
  6.  
  7. Install a new gasket to the valve cover. Ensure that the gasket is properly seated in the groove of the valve rocker arm cover.
  8.  
  9. Install the valve rocker cover. Tighten the mounting bolts to 89 inch lbs. (10 Nm).
  10.  
  11. The remainder of the removal is the reverse order of removal.
  12.  

3.9L Engine
Left Side
  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Remove the Positive Crankcase Ventilation (PCV) tube. Replace both O-rings when re-installing.
  4.  
  5. Remove the valve cover bolts.
  6.  
  7. Remove valve cover and gasket.
  8.  
  9. Installation is the reverse order of removal.
  10.  

Right Side
  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Remove any spark plug wires from their retainers for clearance.
  4.  
  5. Remove the ignition coil assembly.
  6.  
  7. Remove the ignition coil assembly studs if necessary.
  8.  
  9. Remove the fresh air tube from the valve cover.
  10.  
  11. Remove the valve cover mounting bolts.
  12.  
  13. Remove the valve cover.
  14.  
  15. Installation is the reverse order of removal.
  16.  

 
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