GM Service Manual Online
For 1990-2009 cars only

    Object Number: 639837  Size: SH
  1. Remove the oil level indicator from the tube.
  2. Remove the oil level indicator tube bolt from the right cylinder head.
  3. Remove the oil level indicator tube from the engine block.
  4. Important: Inspect the O-ring seal for cuts or damage. The O-ring seal may be used again if it is not cut or damaged.

  5. Remove the O-ring seal from the tube, if required.