GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 497937  Size: SH
  1. Remove the oil level indicator.
  2. Remove the secondary AIR valve bracket bolt.
  3. Loosen the oil level indicator tube nut.
  4. Pull the oil level indicator tube from the crankcase.

Installation Procedure


    Object Number: 497937  Size: SH
  1. Replace the oil level indicator tube O-ring.
  2. Install the oil level indictor tube.
  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.

  4. Install the AIR valve bracket bolt.
  5. Tighten

        • Tighten the oil level indicator tube nut to 10 N·m (89 lb in).
        • Tighten the secondary AIR valve bracket bolt to 9 N·m (80 lb in).
  6. Install the oil level indicator.