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For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2002 🢒 Seville 🢒 Engine 🢒 Engine Mechanical - 4.6L 🢒 Intake Manifold Installation

Intake Manifold Installation Seville/DeVille


    Object Number: 522671 Size: SH
  1. Install the intake manifold, fitting the plenum duct over the intake manifold duct.

    2. Object Number: 522669 Size: SH
  2. Loosely install the intake manifold bolts.

    3. Object Number: 797947 Size: SH

    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. Tighten the intake manifold bolts in sequence (1-10).

    4. Tighten
    Tighten the intake manifold bolts to 10 N·m (89 lb in).


    Object Number: 522666 Size: SH
  4. Tighten the plenum duct clamp (1) to the intake manifold.

    5. Tighten
    Tighten the plenum duct clamp to 2.75 N·m (24 lb in).


    Object Number: 522658 Size: SH
  5. Inspect the fuel injector O-rings. Ensure the fuel injector O-rings are not missing, mis-aligned or damaged. Replace the O-rings if necessary.
  6. Lubricate the intake manifold fuel injector bores with light mineral oil GM P/N 9981704, clean engine oil, or equivalent.
  7. Install the fuel rail with fuel injectors as an assembly.
  8. Install the fuel rail studs.

    9. Tighten
    Tighten the fuel rail studs to 9 N·m (80 lb in).


    Object Number: 522654 Size: SH
  9. Install the fuel rail bracket nut to the engine lift bracket.

    10. Tighten
    Tighten the fuel rail bracket nut to 10 N·m (89 lb in).


    Object Number: 490817 Size: SH
  10. Install the fuel injector wiring harness.
  11. Connect the fuel injector electrical connectors (1) to the fuel injectors.

    12. Object Number: 798638 Size: SH
  12. Install the PCV dirty air tube to the PCV orifice in the right camshaft cover and to the intake manifold.

    13. Object Number: 522644 Size: SH
  13. Install the PCV fresh air feed tube to the camshaft cover and the water crossover.

    14. Object Number: 522641 Size: SH
  14. Install the fuel pressure regulator vacuum tube to the fuel pressure regulator and the throttle body.

    15. Object Number: 522640 Size: SH
  15. Install the brake booster hose to the throttle body.

Intake Manifold Installation Eldorado


    Object Number: 522671 Size: SH
  1. Install the intake manifold, fitting the plenum duct over the intake manifold neck.

    2. Object Number: 522669 Size: SH
  2. Loosely install the intake manifold bolts.

    3. Object Number: 797947 Size: SH

    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. Tighten the intake manifold bolts in sequence (1-10).

    4. Tighten
    Tighten the intake manifold bolts to 10 N·m (89 lb in).


    Object Number: 522666 Size: SH
  4. Tighten the plenum duct clamp (1) to the intake manifold.

    5. Tighten
    Tighten the plenum duct clamp to 2.75 N·m (24 lb in).


    Object Number: 522664 Size: SH
  5. Inspect the fuel injector O-rings. Ensure the fuel injector O-rings are not missing, mis-aligned or damaged. Replace the O-rings if necessary.
  6. Lubricate the intake manifold fuel injector bores with light mineral oil GM P/N 9981704, clean engine oil, or equivalent.
  7. Install the fuel rail with fuel injectors as an assembly.
  8. Install the fuel rail studs.

    9. Tighten
    Tighten the fuel rail studs to 9 N·m (80 lb in).


    Object Number: 522662 Size: SH
  9. Install the fuel rail bracket bolt to the water crossover.

    10. Tighten
    Tighten the fuel rail bracket bolt to 25 N·m (18 lb ft).


    Object Number: 490817 Size: SH
  10. Install the fuel injector wiring harness.
  11. Connect the fuel injector electrical connectors (1) to the fuel injectors.

    12. Object Number: 522651 Size: SH
  12. Install the vacuum source tube to the intake manifold.

    13. Object Number: 798638 Size: SH
  13. Install the PCV dirty air tube to the PCV orifice in the right camshaft cover and to the intake manifold.

    14. Object Number: 522644 Size: SH
  14. Install the PCV fresh air feed tube to the camshaft cover and the throttle body.

    15. Object Number: 522641 Size: SH
  15. Install the fuel pressure regulator vacuum tube to the fuel pressure regulator and the water crossover.

    16. Object Number: 522640 Size: SH
  16. Install the brake booster hose to the throttle body.