GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2005 🢒 DeVille 🢒 Engine 🢒 Engine Controls - 4.6L 🢒 Air Cleaner Inlet Duct Replacement

Removal Procedure

    Object Number: 622423 Size: MH
  1. Disconnect the mass air flow/intake air temperature (MAF/IAT) sensor electrical connector.
  2. Loosen the air cleaner intake and MAF/IAT assembly clamps from the throttle body side and air cleaner cover side.
  3. Remove the air cleaner intake and MAF/IAT assembly from the vehicle.
  4. Separate the Air cleaner intake duct from the MAF/IAT sensor.

Installation Procedure

    Object Number: 622423 Size: MH
  1. Combine the air cleaner intake duct and mass air flow/intake air temperature (MAF/IAT) sensor.
  2. Install the air cleaner intake and MAF/IAT assembly on the throttle body and air cleaner cover.

    3. 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.

  3. Inspect for proper alignment of the air cleaner intake and MAF/IAT assembly and tighten the hose clamps.

    4. Tighten
    Tighten the air cleaner intake and MAF/IAT assembly clamps to 3 N·m (27 lb in).

  4. Connect the MAF/IAT sensor electrical connector.