GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2009 🢒 Lucerne 🢒 Diagnostic Navigation 🢒 Vehicle Diagnostic Information 🢒 Air Compressor Replacement

Removal Procedure
  1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle.

    2. Object Number: 344303 Size: SH

    Note: Before disconnecting the air hose from the intake air filter or the air compressor, clean the components and the surrounding area to prevent dirt and other foreign material from entering the ALC system.

  2. Disconnect the air tube from the air dryer.
  3. Remove the bolt and the harness tie with the air tube from the air compressor bracket.

    4. Object Number: 344295 Size: SH
  4. Remove the intake air filter from the vehicle.
  5. Remove the vehicle harness connector from the air compressor connector.
  6. Remove the 2 nuts, 2 bolts, and the air compressor assembly from the vehicle.

    7. Object Number: 344303 Size: SH
  7. Slide the air compressor connector off of the connector anchor.
  8. Remove 2 bolts and the heat shield from the air compressor bracket.

Installation Procedure

    Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 344303 Size: SH
  1. Install the heat shield on the air compressor bracket with 3 bolts.

    2. Do not install the fourth heat shield bolt. It must be installed after the air tube is connected.

    Tighten
    Tighten the bolts to 4 N·m (35 lb in).

  2. Install the air compressor connector to the connector anchor.

    3. Object Number: 344295 Size: SH
  3. Install the air compressor assembly on the vehicle with 2 nuts and 2 bolts.

    4. Tighten

        • Tighten the bolts to 9 N·m (80 lb in).
        • Tighten the 2 nuts to 9 N·m (80 lb in).
  4. Connect the harness connector to the air compressor connector.
  5. Install the intake air filter on the vehicle.

    6. Object Number: 344303 Size: SH
  6. Connect the air tube to the air dryer.
  7. Connect the air tube and the harness tie to the air compressor bracket with the bolt.

    8. Tighten
    Tighten the bolt to 4 N·m (35 lb in).

    Note: Before driving the vehicle, turn the ignition on and wait approximately 45 seconds. This will ensure that the air adjustable shock absorbers are filled with residual pressure.

  8. Lower the vehicle.