GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. Loosen the 2 intake air duct clamps from the mass airflow (MAF) sensor and the throttle body.
  2. Disconnect the positive crankcase ventilation clean air tube from the intake duct.
  3. Disconnect the MAF sensor electrical connector.
  4. Remove the fastener that attaches the air intake duct to the upper tie-bar.

  5. Object Number: 1236156  Size: SH
  6. Remove the air cleaner cover fasteners and remove the air intake duct and air cleaner cover.
  7. Separate the air intake duct from the MAF sensor.

Installation Procedure


    Object Number: 1236156  Size: SH
  1. Install the air intake duct to the MAF sensor.
  2. Install the air intake duct to the throttle body and the air cleaner cover to the air cleaner assembly.
  3. Install the air cleaner cover fasteners.
  4. Install the fastener that attaches the air intake duct to the upper tie-bar.
  5. 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.

  6. Tighten the air intake duct clamps fastener at the upper tie bar.
  7. Tighten
    Tighten the intake air duct clamps to 10 N·m (89 lb in).

  8. Reconnect the MAF sensor electrical connector.
  9. Reconnect the positive crankcase ventilation clean air tube to the air intake duct.
  10. Tighten the air intake duct clamps.
  11. Tighten
    Tighten the intake air duct clamps to 2 N·m (18 lb in).