GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2001 🢒 Impala 🢒 Engine 🢒 Engine Electrical 🢒 Air Cleaner Assembly Replacement

Removal Procedure
  1. Disconnect the IAT sensor electrical connector.
  2. Remove the 3 bolts from the inner fender brace and remove the brace.
  3. Loosen the clamp securing the air intake duct to the air cleaner housing.

    4. Object Number: 444496 Size: SH
  4. Carefully remove the air intake duct from the throttle body and air cleaner housing (1).
  5. Remove the 2 screws (2) from the 2 air cleaner housing sections.
  6. Remove the air cleaner housing cover assembly (1).
  7. Without disconnecting the PCM connectors, remove the PCM (4) and harness from the PCM housing (3).

    8. Object Number: 444479 Size: SH
  8. Carefully remove the PCM housing (1) by pulling the housing from the 2 rubber grommets in the engine compartment. Inspect the assembly for signs of damage and replace if required.

Installation Procedure

    Object Number: 444479 Size: SH
  1. Carefully install the PCM housing by pushing the housing into the 2 rubber grommets (2) in the engine compartment.
  2. Carefully reinstall the PCM (4) and harness into the PCM housing (3).

    3. Object Number: 444496 Size: SH
  3. Install the air cleaner housing cover assembly (1).

    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.

  4. Install the 2 screws (2) into the 2 air cleaner housing sections.

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

  5. Carefully install the air intake duct to the throttle body and air cleaner housing (1).
  6. Install the air intake duct to the air cleaner housing (1).

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

  7. Position the inner fender brace and reinstall the 3 bolts.
  8. Connect the IAT Sensor electrical connector.