GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 828878  Size: SH
  1. Remove the four fasteners from the engine cover (1).
  2. Remove the engine cover (1) from the engine.

  3. Object Number: 850214  Size: SH
  4. Disconnect the PCV hose (1) from the PCV valve.
  5. Disconnect the PCV breather hose (2).
  6. Disconnect the EVAP hose (3).
  7. Swing the two PCV hoses and the EVAP hose away from the cylinder head.

  8. Object Number: 828864  Size: SH
  9. Disconnect the electrical connector from the rocker arm oil control solenoid valve.
  10. Remove the fastener retaining the rocker arm oil control solenoid valve to the cylinder head.
  11. Remove the rocker arm oil control solenoid valve (1) and the O-ring (2) from the cylinder head.

Installation Procedure


    Object Number: 828864  Size: SH
  1. Install a new O-ring (2) and the rocker arm oil control solenoid valve (1) into the cylinder head.
  2. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  3. Secure the rocker arm oil control solenoid valve with the one fastener.
  4. Tighten
    Tighten the fastener to 9 N·m (80 lb in).

  5. Connect the electrical connector to the solenoid valve.

  6. Object Number: 850214  Size: SH
  7. Connect the PCV hose (1) and the PCV breather hose (2) to the engine.
  8. Connect the EVAP hoses.

  9. Object Number: 828878  Size: SH
  10. Install the engine cover (1) to the engine.
  11. Secure the engine cover (1) with the four fasteners.
  12. Tighten
    Tighten the fasteners to 7 N·m (62 lb in).