GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2000 🢒 Century 🢒 Engine 🢒 Engine Controls - 3.1L (LG8) 🢒 Secondary Air Injection Pump Replacement

Removal Procedure
  1. Turn OFF the ignition.
  2. Loosen the AIR exhaust pipe hose pinch clamp.

    3. Object Number: 529919 Size: SH
  3. Disconnect the AIR exhaust hose from the AIR pump.
  4. Disconnect the AIR pump electrical connector.
  5. Remove the nuts securing AIR pump bracket to the frame.
  6. Remove the AIR pump and bracket as an assembly.

Installation Procedure

    Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  1. Secure the AIR pump and bracket to the Frame mount with the nuts.

    2. Tighten
    Tighten the nuts securing the AIR pump mounting bracket to 50 N·m (37 lb ft).


    Object Number: 529919 Size: SH
  2. Connect the AIR pump electrical connector.
  3. Lightly lubricate inner edge of AIR exhaust hose.
  4. Attach the AIR exhaust hose to the AIR pump outlet port.
  5. Place the AIR exhaust hose pinch clamp around the AIR pump outlet port and exhaust hose connection.