GM Service Manual Online
For 1990-2009 cars only
  1. Install a NEW O-ring on the oil level indicator tube.

  2. Object Number: 1866804  Size: SH
  3. Install the oil level indicator and tube by sliding the tube down through the lower crankcase hole.
  4. Caution: Refer to Fastener Caution in the Preface section.

  5. Install the oil level indicator tube bracket bolt and tighten to 10 N·m (89 lb in).