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

Timing Chain Cover & Seal

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Removal & Installation



3.5L Engine
  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Disconnect the negative battery cable.
  4.  
  5. Drain the cooling system.
  6.  
  7. Drain the engine oil.
  8.  
  9. Remove the accessory drive belt.
  10.  
  11. Remove the drive belt tensioner by accessing it through the wheelhouse opening.
  12.  
  13. Remove the oil pan. For additional information, refer to the following section, -Oil Pan, Removal & Installation.-
  14.  
  15. Remove the crankshaft damper. For additional information, refer to the following section, -Crankshaft Damper, Removal & Installation.-
  16.  
  17. Remove the thermostat bypass pipe from the timing chain cover.
  18.  
  19. Remove the radiator output hose from the timing chain cover.
  20.  
  21. Remove the water pump. For additional information, refer to the following section, -Water Pump, Removal & Installation.-
  22.  
  23. Remove the power steering pump. For additional information, refer to the following section, -Power Steering Pump, Removal & Installation.-
  24.  
  25. Remove the timing chain cover bolts.
  26.  
  27. Remove the timing chain cover and gasket.
  28.  

To install:


NOTE
If you are replacing the timing chain cover, transfer the drive belt shield bolt and drive belt shield to the new cover.

  1. Apply sealer GM P/N 12346004, or equivalent, to both sides of the lower tabs of the engine front cover gasket. Apply the sealer no less than 5.0 mm (0.20 in) wide.
  2.  
  3. Install the timing chain cover.

    Click image to see an enlarged view

    Fig. Installing the front cover mounting bolts-3.5L engine

  4.  
  5. Install the timing chain cover bolts (1). Tighten the timing cha