GM Service Manual Online
For 1990-2009 cars only

Valve Rocker Arm Cover Replacement Right Side

Removal Procedure


    Object Number: 379369  Size: SH
  1. Disconnect the secondary air injection (AIR) pump hose from the check valve hose.

  2. Object Number: 346024  Size: SH
  3. Remove the AIR check valve hose clamps and hose.

  4. Object Number: 346029  Size: SH
  5. Remove the AIR pipe (with check valve), bolts and gasket from the right exhaust manifold.

  6. Object Number: 211648  Size: SH
  7. Disconnect the ignition coil harness main electrical connector.

  8. Object Number: 490925  Size: SH
  9. Remove the spark plug wires from the ignition coils.
  10. Remove the spark plug wires from the spark plugs.

  11. Object Number: 379367  Size: MH
  12. Remove the positive crankcase ventilation (PCV) valve pipe from the rocker cover.
  13. Remove the PCV valve pipe strap nut, if needed.
  14. Remove the PCV valve pipe from the intake manifold, if needed.
  15. Remove the valve rocker arm cover. Refer to Valve Rocker Arm Cover Removal (Right Side) .

Installation Procedure


    Object Number: 379367  Size: MH
  1. Install the valve rocker arm cover. Refer to Valve Rocker Arm Cover Installation (Right Side) .
  2. Install the PCV valve pipe to the intake manifold, if removed.
  3. Install the PCV valve pipe strap nut, if removed.
  4. Tighten
    Tighten the PCV valve pipe strap nut to 12 N·m (106 lb in).

  5. Install the PCV valve pipe to the rocker cover.

  6. Object Number: 490925  Size: SH
  7. Install the spark plug wires to the spark plugs.
  8. Install the spark plug wires to the ignition coils.
  9. Important: Position the plug wire to avoid contact with the exhaust manifold.


    Object Number: 211648  Size: SH
  10. Connect the ignition coil harness main electrical connector.

  11. Object Number: 346029  Size: SH
  12. Install the AIR pipe (with check valve), bolts and gasket to the right exhaust manifold.
  13. Tighten
    Tighten the AIR pipe bolts to 20 N·m (15 lb ft).


    Object Number: 346024  Size: SH
  14. Install the AIR check valve hose and clamps.

  15. Object Number: 379369  Size: SH
  16. Connect the AIR pump hose to the check valve hose.

  17. Object Number: 208241  Size: SH
  18. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.

Valve Rocker Arm Cover Replacement Left Side

Removal Procedure


    Object Number: 220597  Size: SH
  1. Relieve the fuel system pressure. Refer to Fuel Pressure Relief Procedure in Engine Controls - 5.7L.
  2. Disconnect the fuel line from the fuel rail.
  3. Disconnect the vapor line from the fuel vapor purge valve.

  4. Object Number: 379366  Size: SH
  5. Remove the positive crankcase ventilation (PCV) valve pipe from the rocker cover.
  6. Disconnect the coil harness main electrical connector.

  7. Object Number: 490925  Size: SH
  8. Remove the spark plug wires from the ignition coils.
  9. Remove the spark plug wires from the spark plugs.

  10. Object Number: 379369  Size: SH
  11. Disconnect the secondary air injection (AIR) pump hose from the check valve hose.

  12. Object Number: 346024  Size: SH
  13. Remove the AIR check valve hose clamps and hose.

  14. Object Number: 346026  Size: SH
  15. Remove the AIR pipe (with check valve), bolts and gasket from the left exhaust manifold.
  16. Remove the valve rocker arm cover. Refer to Valve Rocker Arm Cover Removal (Left Side) .

Installation Procedure


    Object Number: 346026  Size: SH
  1. Install the valve rocker arm cover. Refer to Valve Rocker Arm Cover Installation (Left Side) .
  2. Install the AIR pipe (with check valve), bolts and gasket to the left exhaust manifold.
  3. Tighten
    Tighten the AIR pipe bolts to 20 N·m (15 lb ft).


    Object Number: 346024  Size: SH
  4. Install the AIR check valve hose and clamps.

  5. Object Number: 379369  Size: SH
  6. Connect the AIR pump hose to the check valve hose.

  7. Object Number: 490925  Size: SH
  8. Install the spark plug wires to the spark plugs.
  9. Install the spark plug wires to the ignitions coils.
  10. Connect the coil harness main electrical connector.

  11. Object Number: 379366  Size: SH
  12. Install the PCV valve pipe to the rocker cover.

  13. Object Number: 220597  Size: SH
  14. Install the fuel line to the fuel rail.
  15. Install the vapor line to the fuel vapor purge valve.