GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2009 🢒 Lucerne 🢒 Engine 🢒 Engine Mechanical - 4.6L 🢒 Secondary Air Injection Pump Replacement

Removal Procedure

    Object Number: 1665453 Size: SH
  1. Remove the front air deflector. Refer to Front Air Deflector Replacement.
  2. Disconnect the engine harness electrical connector (1) from the secondary air injection (AIR) pump.

    3. Object Number: 1665331 Size: SH
  3. Disconnect the AIR pump inlet hose quick connect fitting from the AIR pump. Refer to Plastic Collar Quick Connect Fitting Service.

    4. Object Number: 1673194 Size: SH
  4. Disconnect the AIR pump outlet hose quick connect fitting from the AIR pump. Refer to Plastic Collar Quick Connect Fitting Service.

    5. Object Number: 1673187 Size: SH
  5. Remove the AIR pump bolt.

    6. Object Number: 1673189 Size: SH
  6. Loosen the AIR pump nuts.
  7. Lift up and pull out in order to remove the AIR pump from the cradle bracket.

Installation Procedure

    Object Number: 1673189 Size: SH
  1. Align and install the AIR pump integral nuts to the holes in the cradle bracket and push the pump down.

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

  2. Tighten the AIR pump nuts.

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


    Object Number: 1673187 Size: SH
  3. Install the AIR pump bolt.

    4. Tighten
    Tighten the bolt to 12 N·m (106 lb in).


    Object Number: 1673194 Size: SH
  4. Connect the AIR pump outlet hose quick connect fitting to the AIR pump. Refer to Plastic Collar Quick Connect Fitting Service.

    5. Object Number: 1665331 Size: SH
  5. Connect the AIR pump inlet hose quick connect fitting to the AIR pump. Refer to Plastic Collar Quick Connect Fitting Service.

    6. Object Number: 1665453 Size: SH
  6. Connect the engine harness electrical connector (1) to the AIR pump.
  7. Install the front air deflector. Refer to Front Air Deflector Replacement.