GM Service Manual Online
For 1990-2009 cars only

    Object Number: 1957981  Size: SH
  1. Remove the oil level indicator tube bracket to cylinder head retaining bolt (2).
  2. Remove the oil level indicator (1) from the oil level indicator tube (3).
  3. Remove the knock sensor. Refer to Knock Sensor Replacement - Bank 2.

  4. Object Number: 1957983  Size: SH
  5. Remove the oil level indicator tube (1) up through the exhaust manifold (2).

  6. Object Number: 1958778  Size: SH
  7. Remove and discard the O-ring (1) from the oil level indicator tube (2) if damaged.