GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2009 🢒 SLS 🢒 Engine 🢒 Engine Mechanical - 4.6L (LH2) 🢒 Intake Manifold Installation

    Object Number: 1575693 Size: SH
  1. Ensure the NEW gaskets are installed in the intake manifold.
  2. Place the intake manifold in position.

    3. Object Number: 1575692 Size: SH
  3. Loosely install the 10 bolts attaching the intake manifold to the cylinder heads.

    4. Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 928179 Size: SH
  4. Tighten the intake manifold bolts in sequence (1-10).

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

  5. Lubricate the intake manifold fuel injector bores with light mineral oil GM P/N 12345610, (Canadian P/N 993193), clean engine oil or equivalent.

    6. Object Number: 1575691 Size: SH

    Note: DO NOT force the injectors into position.

  6. Install the entire fuel rail and injector assembly into the intake manifold by pressing the fuel rail and injector simultaneously into the correct position.

    7. Object Number: 1575689 Size: SH
  7. Install the bolts attaching the fuel rail to the intake manifold.

    8. Tighten
    Tighten the fuel rail bolts to 10 N·m (89 lb in).


    Object Number: 1575688 Size: SH
  8. Install the sight shield bracket.
  9. Install the sight shield bracket nuts.

    10. Tighten
    Tighten the sight shield bracket nuts to 10 N·m (89 lb in).


    Object Number: 1575687 Size: SH
  10. Connect the positive crankcase ventilation (PCV) dirty air tube to the camshaft cover.

    11. Object Number: 1575685 Size: SH
  11. Connect the PCV fresh air tube to the camshaft cover.