GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2009 🢒 Impala 🢒 Engine 🢒 Engine Mechanical - 3.9L 🢒 Air Cleaner Outlet Duct Replacement

Removal Procedure

    Object Number: 1556020 Size: SH
  1. Disconnect the positive crankcase ventilation (PCV) tube from the air inlet duct. Refer to Plastic Collar Quick Connect Fitting Service.
  2. Loosen the air inlet duct clamp at the throttle body.
  3. Remove the air inlet duct from the throttle body.
  4. Loosen the air inlet duct clamp at the mass air flow (MAF)/intake air temperature (IAT) sensor.
  5. Remove the air inlet duct from the MAF/IAT sensor.

Installation Procedure

    Object Number: 1556020 Size: SH
  1. Install the air inlet duct from the MAF/IAT sensor.

    2. Caution: Refer to Fastener Caution in the Preface section.

  2. Tighten the air inlet duct clamp at the MAF/IAT sensor.

    3. Tighten
    Tighten the clamp to 3 N·m (27 lb in).

  3. Install the air inlet duct to the throttle body.
  4. Tighten the air inlet duct clamp at the throttle body.

    5. Tighten
    Tighten the clamp to 3 N·m (27 lb in).

  5. Connect the PCV tube to the air inlet duct. Refer to Plastic Collar Quick Connect Fitting Service.