GM Service Manual Online
For 1990-2009 cars only

Secondary Air Injection System Description AIR Pump

Removal Procedure

Notice: The secondary air injection (AIR) pump is a positive displacement vane type which is permanently lubricated. The AIR pump requires no periodic maintenance.

  1. Remove the drive belt. Refer to Engine Cooling.
  2. Disconnect the AIR pump electrical connector

  3. Object Number: 18354  Size: SH
  4. Disconnect the AIR air cleaner hose to pump.

  5. Object Number: 18350  Size: SH
  6. Disconnect the AIR output hose at the AIR pump.

  7. Object Number: 18432  Size: SH
  8. Remove the bolts holding the pump to the mounting brackets.

  9. Object Number: 18343  Size: SH
  10. Remove the pump.

Installation Procedure


    Object Number: 18343  Size: SH
  1. Install the AIR pump.

  2. Object Number: 18342  Size: SH
  3. Install the AIR pump mounting bolts
  4. Connect the electrical connector

  5. Object Number: 18350  Size: SH
  6. Connect the AIR pump output hose to the AIR pump.

  7. Object Number: 18354  Size: SH
  8. Connect the AIR air cleaner hose to the AIR pump.
  9. Install the pump drive belt. Refer to Engine Cooling.

Secondary Air Injection System Description AIR Valve

Removal Procedure


    Object Number: 18365  Size: SH
  1. Remove the bolt for the AIR crossover Bank 1 bracket.

  2. Object Number: 18366  Size: SH
  3. Disconnect the AIR crossover Bank 1 hose.

  4. Object Number: 18349  Size: SH
  5. Disconnect the AIR pump output hose at the AIR valve.

  6. Object Number: 18368  Size: SH
  7. Disconnect the Bank 2 AIR pipe at the AIR valve.

  8. Object Number: 18362  Size: SH
  9. Remove the AIR valve bracket bolt.
  10. Remove the valve from the bracket.

Installation Procedure


    Object Number: 18362  Size: SH
  1. Install the AIR valve to the bracket.
  2. Install the AIR valve bracket bolt.

  3. Object Number: 18368  Size: SH
  4. Connect the Bank 2 AIR pipe.

  5. Object Number: 18349  Size: SH
  6. Connect the AIR pump output hose to the AIR Valve.

  7. Object Number: 18366  Size: SH
  8. Connect the AIR crossover Bank 1 hose.

  9. Object Number: 18365  Size: SH
  10. Install the bolt for the AIR crossover Bank 1 hose bracket