GM Service Manual Online
For 1990-2009 cars only

    Object Number: 233866  Size: SH

    Important: It is difficult to mount the engine on an engine stand with the exhaust manifold/crossover pipe in place. When the engine is out of the vehicle, properly support the engine on the floor or bench and remove the exhaust manifold before mounting the engine on an engine stand.

  1. Remove the oil level indicator tube bolt.
  2. Remove the oil level indicator and tube by sliding the tube up through the exhaust manifold.
  3. Remove and discard the O-ring from the oil level indicator tube.