GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2009 🢒 Impala 🢒 Engine 🢒 Engine Controls and Fuel - 3.5L 🢒 Secondary Air Injection Pipe Replacement

Removal Procedure

    Object Number: 1844047 Size: SH
  1. Remove the catalytic converter. Refer to Catalytic Converter Replacement.
  2. Remove the secondary air injection (AIR) shutoff/check valve nuts (1).

    3. Object Number: 1844049 Size: SH
  3. Remove the AIR pipe bolts (1).
  4. Remove the AIR pipe, heat shield, and gaskets. Discard the gaskets.
  5. Remove the heat shield from the AIR pipe.

Installation Procedure

    Object Number: 1844049 Size: SH
  1. Position the heat shield to the AIR pipe, and install one middle AIR pipe bolt to the pipe
  2. Install NEW AIR pipe gaskets to the studs and the bolt.
  3. Position and install the AIR pipe.

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

  4. Install the remaining AIR pipe bolts (1).

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


    Object Number: 1844047 Size: SH
  5. Install the AIR shutoff/check valve nuts (1).

    6. Tighten
    Tighten the nuts to 10 N·m (89 lb in).

  6. Install the catalytic converter. Refer to Catalytic Converter Replacement.