GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 1997 🢒 Catera 🢒 Engine 🢒 Engine Controls - 3.0L 🢒 Intake Air Resonator Replacement

Removal Procedure
  1. Disconnect the negative battery cable. Refer to

    Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

    in General Information.

    2. Object Number: 158554 Size: LH
  2. Disconnect the Mass Air Flow (MAF) sensor (4) electrical connector.
  3. Disconnect the Intake Air Temperature (IAT) sensor (5) electrical connector.
  4. Release the air intake hose clamps from the air cleaner housing and the MAF sensor.
  5. Remove the air intake hose (6) from the air cleaner housing and from the MAF sensor.
  6. Release the Idle Air Control (IAC) inlet hose clamp.
  7. Remove the IAC inlet hose (1).
  8. Release the air inlet hose clamps at the throttle body.
  9. Remove the air inlet hoses (7) from the throttle body.
  10. Disconnect the electrical connector from the switchover valve.
  11. Disconnect the vacuum connections at the switchover valve and the vacuum tank.
  12. Remove the intake air resonator nuts (3).
  13. Remove the intake air resonator.

Installation Procedure

    Object Number: 158554 Size: LH
  1. Install the intake air resonator.
  2. Insert the intake air resonator guide pin (2) into the rubber mount.
  3. Install the intake air resonator nuts (3).

    4. Tighten
    Tighten the intake air resonator nuts to 3 N·m (27 lb in). Refer to

    Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

    in General Information.

  4. Connect the vacuum connections at the switchover valve and the vacuum tank.
  5. Connect the electrical connector to the switchover valve.
  6. Install the air inlet hoses (7) to the throttle body.
  7. Install the air inlet hose clamps at the throttle body.
  8. Install the IAC inlet hose (1).
  9. Install the Idle Air Control (IAC) inlet hose clamp.
  10. Install the air intake hose (6) to the air cleaner housing and the MAF sensor.
  11. Install the air intake hose clamps to the air cleaner housing and the MAF sensor.
  12. Connect the Intake Air Temperature (IAT) sensor (5) electrical connector.
  13. Connect the Mass Air Flow (MAF) sensor (4) electrical connector.
  14. Reconnect the negative battery cable.
  15. Reprogram the applicable accessories.