GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 2004 🢒 Bonneville 🢒 Engine 🢒 Engine Mechanical - 4.6L 🢒 Positive Crankcase Ventilation Hose/Pipe/Tube Replacement

Removal Procedure

    Object Number: 475295 Size: SH
  1. Remove the 2 nuts (2) from the fuel injector sight shield (1).
  2. Lift the sight shield (1) from the front and pull forward to disengage the rear tab from the bracket.

    3. Object Number: 522644 Size: SH
  3. Disconnect the positive crankcase ventilation (PCV) fresh air tube from the left camshaft cover.
  4. Remove the PCV fresh air tube from the throttle body.
  5. Remove the drive belt. Refer to Drive Belt Replacement .

    6. Object Number: 71094 Size: SH
  6. Remove the power steering pump retaining bolt.
  7. With the hoses still attached, carefully position aside the power steering pump.

    8. Object Number: 522647 Size: SH
  8. Remove the retaining clip securing the PCV dirty air tube.
  9. Disconnect the PCV dirty air tube from the PCV orifice tube.
  10. Remove the PCV dirty air tube from the intake manifold.

Installation Procedure

    Object Number: 522647 Size: SH
  1. Connect the PCV dirty air tube to the intake manifold fitting.
  2. Connect the PCV dirty air tube to the PCV orifice tube.

    3. Important: Ensure that the PCV dirty air tube is located between the tabs of the intake manifold.

  3. Attach the retaining clip to the intake manifold.

    4. Object Number: 71094 Size: SH
  4. Place the power steering pump in position in the engine valley. Slide the molded wedge into the retaining feature cast into the cylinder block.

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

  5. Install the power steering pump retaining bolt.

    6. Tighten
    Tighten the power steering pump retaining bolt to 50 N·m (37 lb ft).

  6. Install the drive belt. Refer to Drive Belt Replacement .

    7. Object Number: 522644 Size: SH
  7. Connect the PCV fresh air tube to the left camshaft cover.
  8. Connect the PCV fresh air tube to the throttle body.

    9. Object Number: 475295 Size: SH
  9. Align the rear tab with the slot in the rear bracket and push the sight shield (1) inward to engage.
  10. Pull the sight shield down and align the studs on the intake manifold with the holes in the sight shield (1).
  11. Install the fuel injector sight shield nuts (2).

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