GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 289500  Size: SH
  1. Remove the 2 nuts from the fuel injector sight shield.
  2. Lift the sight shield from the front and pull forward to disengage the rear tab from the bracket.

  3. Object Number: 233873  Size: SH
  4. Disconnect the PCV fresh air tube (2) from the right camshaft cover.
  5. Remove the PCV fresh air tube (2) from the throttle body.
  6. Remove the retaining clip securing the PCV dirty air tube (1).
  7. Disconnect the PCV dirty air tube (1) from the PCV valve.
  8. Remove the PCV dirty air tube (1) from the intake manifold.

Installation Procedure


    Object Number: 233873  Size: SH
  1. Connect the PCV dirty air tube (1) to the intake manifold fitting.
  2. Connect the PCV dirty air tube (1) to the PCV valve.
  3. Important: Ensure that the PCV dirty air tube is located between the tabs of the intake manifold.

  4. Attach the retaining clip to the intake manifold.
  5. Connect the PCV fresh air tube (2) to the left camshaft cover.
  6. Connect the PCV fresh air tube (2) to the throttle body.

  7. Object Number: 289500  Size: SH
  8. Align the rear tab with the slot in the rear bracket and push the sight shield inward to engage.
  9. Pull sight shield down and align the studs on the intake manifold with the holes in the sight shield.
  10. 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.

  11. Install the fuel injector sight shield nuts.
  12. Tighten
    Tighten the fuel injector sight shield nuts to 3 N·m (27 lb in).