GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 344295  Size: SH
  1. Raise the vehicle and suitably support. Refer to Lifting and Jacking the Vehicle .
  2. Remove the intake air filter from the vehicle.
  3. Disconnect the vehicle harness connector from the air compressor connector.
  4. Remove the two nuts, two bolts, and the air compressor assembly from the vehicle.

  5. Object Number: 344303  Size: SH

    Important: 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 air compressor.

  6. Disconnect the air tube from the air dryer.
  7. Remove the bolt and the harness tie with the air tube from the heat shield.
  8. Remove three bolts and the heat shield from the air compressor bracket.
  9. Remove the air dryer from the air compressor. Refer to Automatic Level Control Air Dryer Replacement .

  10. Object Number: 226931  Size: SH
  11. Remove the air hose from the air compressor at two places.

  12. Object Number: 227985  Size: SH
  13. Remove the two screws and the two brackets from the air compressor.

Installation Procedure


    Object Number: 227985  Size: SH
  1. Install the two brackets on the air compressor with two screws.
  2. Tighten
    Tighten two screws to 7 N·m (62 lb in).


    Object Number: 226931  Size: SH
  3. Connect the air hose to the air compressor at two places.
  4. Install the air dryer on the air compressor. Refer to Automatic Level Control Air Dryer Replacement .

  5. Object Number: 344303  Size: SH
  6. Install the heat shield with three bolts.
  7. Tighten
    Tighten three bolts to 4 N·m (35 lb in).

  8. Connect the air tube to the air dryer.
  9. Install the air tube and the harness tie onto the heat shield with the bolt.
  10. Tighten
    Tighten the bolt to 4 N·m (35 lb in).


    Object Number: 344295  Size: SH
  11. Install the air compressor assembly on the vehicle with two nuts and two bolts.
  12. Tighten

        • Tighten two bolts to 9 N·m (80 lb in).
        • Tighten two nuts to 9 N·m (80 lb in).
  13. Connect the harness connector to the air compressor connector.
  14. Install the intake air filter on the vehicle.
  15. Lower the vehicle.