GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 1581869  Size: SH
  1. Remove the spark plug wire from the number 6 cylinder spark plug.
  2. Remove the heated oxygen sensor (HO2S) clip (3) from the fill tube bracket.

  3. Object Number: 1581866  Size: SH
  4. Remove the oil level indicator.
  5. Remove the oil level indicator tube bracket bolt.
  6. Remove the oil level indicator tube.
  7. Inspect the oil level indicator tube O-ring seal, for damage, replace as necessary.

Installation Procedure


    Object Number: 1581866  Size: SH
  1. Lubricate the oil level indicator tube O-ring seal with clean engine oil.
  2. Install the oil level indicator tube into the engine block.
  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 oil level indicator tube bracket bolt.
  5. Tighten
    Tighten the bolt to 25 N·m (18 lb ft).

  6. Install the oil level indicator.

  7. Object Number: 1581869  Size: SH
  8. Install the HO2S clip (3) to the fill tube bracket.
  9. Install the spark plug wire to the number 6 cylinder spark plug.