GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 1999 🢒 Riviera 🢒 Engine 🢒 Engine Controls - 3.8L 🢒 Air Cleaner Assembly Replacement

Removal Procedure

    Object Number: 393384 Size: SH
  1. Remove the rear air intake duct clamp (2).
  2. Remove the air intake duct (1).

    3. Object Number: 393376 Size: SH
  3. Disconnect the IAT sensor electrical connector (2) from the IAT sensor (3). Refer to Intake Air Temperature Sensor Replacement .
  4. Release both air cleaner cover latches (4).
  5. Remove the bolt through the air cleaner assembly to side rail.
  6. Pivot the air cleaner and intake air duct assembly toward the front of the vehicle.
  7. Remove the air cleaner assembly (1).
  8. Inspect air filter element (5).
  9. Remove any loose debris that may be found laying in the base of the air cleaner.
  10. Remove the base.

Installation Procedure

    Object Number: 393376 Size: SH
  1. Install a new air filter element (5) into the base.
  2. Snap the front edge of the air cleaner lid (1) into the slots in the front edge of the air cleaner base.
  3. Install the bolt through the air cleaner assembly to side rail.

    4. 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.

    Tighten
    Tighten the bolt to 12 N·m (106 lb in).

    Important: The outlet of the air cleaner assembly and the inlet duct must be lined up when completely installed. Misalignment may cause incorrect air flow readings resulting in MIL illumination or a driveabilty concern.

  4. Pivot air cleaner cover and duct assembly down until the two latches (4) in the cover engage in the air cleaner base.
  5. Inspect to be sure that both latches latch.

    6. Object Number: 393384 Size: SH
  6. Install the intake air duct over the throttle body (1), being careful to ensure that the intake air duct is secure around the entire outer edge of the throttle body.

    7. Tighten
    Tighten the clamp (2) assembly to 2 N·m (18 lb in).


    Object Number: 393376 Size: SH
  7. Connect the IAT sensor connector (2) to the IAT sensor (3).