GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2009 🢒 Lucerne 🢒 Engine 🢒 Engine Controls and Fuel - 4.6L 🢒 Secondary Air Injection Pump Outlet Pipe/Hose Replacement

Removal Procedure

    Object Number: 1673194 Size: SH
  1. Remove the air deflector. Refer to Front Air Deflector Replacement.
  2. Disconnect the secondary air injection (AIR) pump outlet hose quick connect fitting from the AIR pump. Refer to Plastic Collar Quick Connect Fitting Service.

    3. Object Number: 1665332 Size: SH
  3. Open and slide down the pinch clamp attaching the AIR hose to the AIR pipe.
  4. Separate the AIR hose from the AIR pipe.

    5. Object Number: 1673192 Size: SH
  5. Remove the retainers attaching the AIR hose to the engine cradle.
  6. Remove the AIR hose from the vehicle.
  7. Lower the vehicle.

    8. Object Number: 1665457 Size: SH
  8. Remove the heated oxygen sensor (HO2S) clip (5) from the AIR pipe bracket.

    9. Object Number: 1665399 Size: SH
  9. Pinch the constant tension clamp and remove the AIR pipe from the check valve.
  10. Remove the AIR pipe nuts (2, 3).
  11. Remove the AIR pipe.

Installation Procedure

    Object Number: 1665399 Size: SH
  1. Install the AIR pipe.
  2. Connect the AIR pipe to the check valve.

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

  3. Install the AIR pipe nuts (2, 3).

    4. Tighten
    Tighten the nuts to 9 N·m (80 lb in).


    Object Number: 1665457 Size: SH
  4. Install the HO2S clip (5) to the AIR pipe bracket.
  5. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle.

    6. Object Number: 1673192 Size: SH
  6. Install and position the AIR hose to the cradle.
  7. Install the retainers attaching the AIR hose to the engine cradle.

    8. Object Number: 1665332 Size: SH
  8. Install the AIR hose to the AIR pipe.
  9. Open and slide into position the pinch clamp attaching the AIR hose to the AIR pipe.

    10. Object Number: 1673194 Size: SH
  10. Connect the AIR pump outlet hose quick connect fitting to the AIR pump. Refer to Plastic Collar Quick Connect Fitting Service.
  11. Install the air deflector. Refer to Front Air Deflector Replacement.