GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2009 🢒 Impala 🢒 Engine 🢒 Engine Mechanical - 3.5L 🢒 Valve Rocker Arm and Push Rod Installation

    Object Number: 1557681 Size: SH

    Note: All gasket mating surfaces must be free of oil and foreign material. Use GM P/N 12346139 (Canadian P/N 10953463) or equivalent to clean surfaces.

    Note: Room temperature vulcanizing (RTV) sealer is not to be placed under the lower intake manifold gaskets.

  1. Install the lower intake manifold gaskets.

    2. Object Number: 1557679 Size: SH
  2. Coat the ends of the push rods using prelube GM P/N 12345501 (Canadian P/N 992704) or the equivalent.

    3. Note: The intake valve push rods measure 147.51 mm (5.81 in) and the exhaust valve push rods measure 154.87 mm (6.1 in) in length.

  3. Install the push rods in their original location.
  4. Coat the rocker arm friction surfaces using prelube GM P/N 12345501 (Canadian P/N 992704) or the equivalent.

    5. Note: Shims (P/N 88894006) may be required under the valve rocker arm pedestals if reconditioning has been performed on the cylinder head or its components.

  5. Install the valve rocker arms in their original positions.

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

  6. Install the valve rocker arm bolts and tighten to 34 N·m (25 lb ft).