GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 1999 🢒 Malibu 🢒 Engine 🢒 Engine Controls - 3.1L (LG8) 🢒 Secondary Air Injection Pump Replacement

Removal Procedure
  1. Remove the retaining screws from the front portion of the left front wheel well/splash shield.
  2. Lower the splash shield far enough to gain access to the AIR pump assembly.

    3. Object Number: 256253 Size: SH
  3. Loosen and lower the AIR exhaust pipe (2) hose pinch clamp.
  4. Disconnect the AIR exhaust pipe (2) from the AIR pump (1).
  5. Disconnect the AIR pump electrical connector.

    6. Object Number: 256260 Size: SH
  6. Remove the 3 AIR pump (2) mounting bolts (1).

    7. Notice: Do not operate the AIR pump for more than 60 seconds. Continuous operation of the AIR pump in excess of 60 seconds will damage the AIR pump.

  7. Remove the AIR pump and bracket as an assembly.

Installation Procedure

    Object Number: 256260 Size: SH
  1. Attach the AIR pump and bracket assembly (2) the frame rail using the 3 attaching bolts (1)

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

  2. Connect the AIR pump electrical connector.

    3. Object Number: 256253 Size: SH
  3. Attach the AIR exhaust pipe (2) to the AIR pump (1) outlet port.
  4. Place the AIR exhaust pipe pinch clamp around the AIR pump outlet port and exhaust hose connection.
  5. Raise the wheel well/splash shield into position.
  6. Re-install the wheel well/splash shield retaining screws.