GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 1996 🢒 Roadmaster 🢒 Engine 🢒 Engine Controls - 4.3L (Caprice Only) and 5.7L 🢒 Secondary Air Injector Pump Replacement

Removal Procedure

    Object Number: 21176 Size: SH
  1. Disconnect the electrical connector from the AIR pump (2).

    2. Object Number: 21174 Size: SH
  2. Remove the outlet (5) and inlet (4) hoses from the AIR pump (3).

    3. Object Number: 21176 Size: SH
  3. Remove the Air pump mounting bolts (3) from the bracket.
  4. Remove the Air pump (2).

Installation Procedure

    Object Number: 21176 Size: SH
  1. Install the AIR pump (2) to bracket.
  2. Install the mounting bolts (3).

    3. Tighten
    Tighten the AIR Pump Bolts to 5.6 N·m (50 lb in).


    Object Number: 21174 Size: SH
  3. Connect the outlet (5) and inlet (4) hoses to the AIR pump (3).
  4. Connect the electric connector to AIR pump (3).
  5. Check the AIR system for proper operation.