GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2008 🢒 LaCrosse 🢒 Engine 🢒 Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L 🢒 Valve Rocker Arm Cover Replacement - Left Side

Removal Procedure

    Object Number: 1551870 Size: SH
  1. Remove the engine sight shield, if required. Refer to Upper Intake Manifold Sight Shield Replacement .
  2. Remove the connector position assurance (CPA) retainer (3).
  3. Disconnect the ignition coil main electrical connector (4).
  4. Reposition the engine harness, as necessary.

    5. Object Number: 1411963 Size: SH
  5. Remove the spark plug wires (724) from the ignition coils.
    6. 5.1. Twist each plug wire 1/2 turn.
    5.2. Pull only on the boot in order to remove the wire from the ignition coil.
  6. Remove the ignition coil bracket bolts (720).
  7. Remove the ignition coil and bracket assembly (719).

    8. Object Number: 1551864 Size: SH
  8. Remove the positive crankcase ventilation (PCV) clean air tube from the valve rocker arm cover.

    9. Object Number: 1411929 Size: SH
  9. Remove the valve rocker arm cover bolts and cover.

    10. Object Number: 1272820 Size: SH
  10. Remove and discard the old the gasket (504) from the valve rocker arm cover.
  11. Remove the valve rocker arm cover bolt grommets, if cut or damaged.

    12. Important: Do not remove the oil fill tube from the rocker cover unless service is required. If the oil fill tube has been removed, install a NEW tube during assembly.

  12. Remove the oil fill cap from the oil fill tube, if necessary.
  13. Remove the oil fill tube, if necessary.
  14. Discard the oil fill tube, if necessary.

Installation Procedure

Important: 

   • All gasket surfaces should be free of oil an/or other foreign material during assembly.
   • DO NOT reuse the valve rocker arm cover gasket.
   • The valve rocker arm cover bolt grommets may be reused.


    Object Number: 1272820 Size: SH
  1. Install a NEW gasket (504) into the groove of the valve rocker arm cover.

    2. Object Number: 1411929 Size: SH
  2. Install a NEW oil fill tube to the valve rocker arm cover, if necessary.
  3. Install NEW valve rocker arm cover bolt grommets, if necessary.

    4. Notice: Refer to Fastener Notice in the Preface section.

  4. Install the valve rocker arm cover and bolts.

    5. Tighten
    Tighten the bolts to 12 N·m (106 lb in).


    Object Number: 1551864 Size: SH
  5. Remove the positive crankcase ventilation (PCV) clean air tube from the valve rocker arm cover.

    6. Object Number: 1411963 Size: SH
  6. Apply threadlock to the threads of the ignition coil bracket bolts. Refer to Adhesives, Fluids, Lubricants, and Sealers .
  7. Install the ignition coil and bracket assembly.
  8. Install the ignition coil bracket bolts.

    9. Tighten
    Tighten the bolts to 12 N·m (106 lb in).

  9. Install the spark plug wires (724) to the ignition coils.

    10. Object Number: 1551870 Size: SH
  10. Position the engine harness, as necessary.
  11. Connect the ignition coil main electrical connector (4).
  12. Install the CPA retainer (3).
  13. Install the engine sight shield, if required. Refer to Upper Intake Manifold Sight Shield Replacement .