Escalade, Suburban 1500 & 2500, Tahoe, Yukon, Yukon XL 1500 & 2500 (2006-2007), Yukon Denali and Yukon Denali XL (2005-2006)

Valve Covers

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Removal & Installation



4.8L, 5.3L, 6.0L & 6.2L Engines
Left Side
  1. Remove the engine sight shield, if required.
  2.  
  3. Remove the connector position assurance (CPA) lock.
  4.  
  5. Disconnect the main electrical connector to the ignition coil wire harness.
  6.  
  7. Remove the harness clips.
  8.  
  9. Reposition the engine harness, if necessary.
  10.  
  11. Remove the spark plug wires from the ignition coils.
  12.  
  13. Remove the ignition coil bracket studs.
  14.  
  15. Remove the ignition coil bracket.
  16.  
  17. Remove the positive crankcase ventilation (PCV) hose.
  18.  
  19. Loosen the valve rocker arm cover bolts.
  20.  
  21. Remove the valve rocker arm cover.
  22.  
  23. Remove and discard the old gasket.
  24.  
  25. If required, clean and inspect the rocker arm cover.
  26.  

To install:


NOTE
All gasket surfaces should be free of oil or other foreign material during assembly. DO NOT reuse the valve rocker arm cover gasket. If the oil fill tube has been removed from the rocker arm cover, install a NEW fill tube during assembly. If the PCV valve grommet has been removed from the rocker cover, install a NEW grommet during assembly.

  1. Install a NEW rocker cover gasket.
  2.  
  3. Install the valve rocker arm cover.
  4.  
  5. Tighten the rocker arm cover bolts.
    1. Tighten the bolts to 106 inch lbs. (12 Nm).
    2.  

  6.  
  7. Install the PCV hose.
  8.  
  9. Apply threadlock to the threads of the bracket bolts.
  10.  
  11. Install the ignition coil bracket.
  12.  
  13. Install the ignition coil bracket studs.
    1. Tighten the studs to 106 inch lbs. (12 Nm).
    2.  

  14.  
  15. Install the spark plug wires to the ignition coils.
  16.  
  17. Position the engine harness, if necessary.
  18.  
  19. Install the harness clips.
  20.  
  21. Connect the main electrical connector to the ignition coil wire harness.
  22.  
  23. Install the CPA lock.
  24.  
  25. Install the engine sight shield, if required.
  26.  

Right Side
  1. Remove the engine sight shield, if required.
  2.  
  3. Remove the connector position assurance (CPA) lock.
  4.  
  5. Disconnect the main electrical connector to the ignition coil wire harness.
  6.  
  7. Remove the harness clips.
  8.  
  9. Reposition the engine harness, if necessary.
  10.  
  11. Remove the spark plug wires from the ignition coils.
  12.  
  13. Reposition the surge tank/heater hoses from the heater hose bracket.
  14.  
  15. Remove the heater hose bracket nut and bracket.
  16.  
  17. Remove the ignition coil bracket studs.
  18.  
  19. Remove the ignition coil bracket.
  20.  
  21. Remove the positive crankcase ventilation (PCV) hose.
  22.  
  23. Loosen the valve rocker arm cover bolts.
  24.  
  25. Remove the valve rocker arm cover.
  26.  
  27. Remove and discard the old gasket.
  28.  
  29. Remove the oil fill tube from the rocker cover, if required.
  30.  
  31. If required, clean and inspect the rocker arm cover.
  32.  

To install:


NOTE
All gasket surfaces should be free of oil or other foreign material during assembly. DO NOT reuse the valve rocker arm cover gasket. If the oil fill tube has been removed from the rocker arm cover, install a NEW fill tube during assembly.

  1. Lubricate the O-ring seal of the NEW oil fill tube with clean engine oil.
  2.  
  3. Insert the NEW oil fill tube into the rocker arm cover. Rotate the tube clockwise until locked in the proper position.
  4.  
  5. Install the oil fill cap into the tube. Rotate the cap clockwise until locked in the proper position.
  6.  
  7. Install a NEW rocker cover gasket into the valve rocker arm cover lip.
  8.  
  9. Install the valve rocker arm cover.
  10.  
  11. Tighten the rocker arm cover bolts.
    1. Tighten the bolts to 106 inch lbs. (12 Nm).
    2.  

  12.  
  13. Install the PCV hose.
  14.  
  15. Apply threadlock to the threads of the bracket bolts.
  16.  
  17. Install the ignition coil bracket.
  18.  
  19. Install the ignition coil bracket studs.
    1. Tighten the studs to 106 inch lbs. (12 Nm).
    2.  

  20.  
  21. Install the heater hose bracket and nut.
    1. Tighten the nut to 80 inch lbs. (9 Nm).
    2.  

  22.  
  23. Position the surge tank/heater hoses to the heater hose bracket.
  24.  
  25. Install the spark plug wires to the ignition coils.
  26.  
  27. Position the engine harness, if necessary.
  28.  
  29. Install the harness clips.
  30.  
  31. Connect the main electrical connector feeding the ignition coils.
  32.  
  33. Install the CPA lock.
  34.  
  35. Install the engine sight shield, if required
  36.  

8.1L Engine
Left Side
  1. Remove the engine sight shield.
  2.  
  3. Remove the connector position assurance (CPA) retainer from the ignition coil electrical connector.
  4.  
  5. Disconnect the ignition coil harness electrical connector.
  6.  
  7. Remove the spark plug wires from the spark plugs and ignition coils.
  8.  
  9. Remove the valve rocker arm cover bolts.
  10.  
  11. Remove the valve rocker arm cover.
    NOTE
    Valve rocker arm cover gaskets are reusable. Replace the gasket only if damaged.

  12.  
  13. Inspect the valve rocker arm cover gasket for cuts or damage.
  14.  
  15. Clean and inspect the valve rocker arm cover.
  16.  

To install:

  1. Install a new valve rocker arm cover gasket if the gasket was removed from the rocker arm cover.
  2.  
  3. Install the valve rocker arm cover.
  4.  
  5. Install the valve rocker arm cover bolts.
  6.  
  7. Tighten the valve rocker arm cover bolts in the sequence shown, using two passes as shown.
    1. Tighten the bolts a first pass to 53 inch lbs. (6 Nm).
    2.  
    3. Tighten the bolts a final pass to 106 inch lbs. (12 Nm).
      NOTE
      Fully install the spark plug wire by pushing on the exposed end of the spark plug boot. Do not push the spark plug wire on to the spark plug by using the metal heat shield.

    4.  

  8.  
  9. Install the spark plug wires to the spark plugs and ignition coils.
  10.  
  11. Connect the ignition coil harness electrical connector.
  12.  
  13. Install the CPA retainer to the ignition coil electrical connector.
  14.  
  15. Install the engine sight shield.
  16.  

Right Side
  1. Remove the engine sight shield.
  2.  
  3. Loosen the clamps at the throttle body and air cleaner.
  4.  
  5. Remove the air cleaner outlet duct.
  6.  
  7. Remove the connector position assurance (CPA) retainer from the ignition coil electrical connector.
  8.  
  9. Disconnect the ignition coil harness electrical connector.
  10.  
  11. Disconnect the engine coolant temperature (ECT) sensor electrical connector.
  12.  
  13. Remove the spark plug wires from the ignition coils.
  14.  
  15. Loosen the valve rocker arm cover bolts.
  16.  
  17. Remove the valve rocker arm cover.
    NOTE
    The valve rocker arm cover gasket may be reused if not removed from the valve rocker arm cover.

  18.  
  19. Replace the valve rocker arm cover gasket if it is cut or damaged.
  20.  
  21. Clean and inspect the valve rocker arm cover.
  22.  

To install:

  1. Install a NEW valve rocker arm cover gasket, if necessary.
  2.  
  3. Install the valve rocker arm cover.
  4.  
  5. Tighten the valve rocker arm cover bolts in sequence using two passes as shown.
    1. Tighten the bolts a first pass to 53 inch lbs. (6 Nm).
    2.  
    3. Tighten the bolts a final pass to 106 inch lbs. (12 Nm).
    4.  

  6.  
  7. Install the spark plug wires to the ignition coils.
  8.  
  9. Connect the ECT sensor electrical connector.
  10.  
  11. Connect the ignition coil harness electrical connector.
  12.  
  13. Install the CPA retainer to the ignition coil electrical connector.
  14.  
  15. Install the air cleaner outlet duct.
  16.  
  17. Tighten the clamps at the throttle body and air cleaner.
    1. Tighten the clamps to 35 inch lbs. (4 Nm).
    2.  

  18.  
  19. Install the engine sight shield.
  20.  

 
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