GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2008 🢒 Impala 🢒 Engine 🢒 Engine Mechanical - 3.9L 🢒 Upper Intake Manifold Installation

    Object Number: 1866463 Size: SH
  1. Install the upper intake manifold gaskets and manifold.
  2. Apply threadlock GM P/N 12345382 (Canadian P/N 10953489) or equivalent to the upper intake manifold bolt threads.

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

  3. Install the MAP sensor bracket, upper intake manifold bolts, and the upper intake manifold stud.

    4. Tighten
    Tighten the upper intake manifold bolts and stud to 25 N·m (18 lb ft).