GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2005 🢒 DeVille 🢒 Engine 🢒 Engine Mechanical - 4.6L 🢒 Positive Crankcase Ventilation Hose/Pipe/Tube Replacement

Removal Procedure

    Object Number: 475295 Size: SH
  1. Remove the two 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 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 orificed 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 orificed 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: 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.

  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 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).