My 1998 LeSabre with 30,000 miles on it developed an external engine coolant
leak in way of the EGR pipe. I had the upper plastic intake manifold and
the lower aluminum intake manifold plus all gaskets changed at an
independent shop. Thanks to this list I knew enough to insist that the
aluminum manifold be replaced and to make sure that the new aluminum
manifold - GM part #24508923 - had a smaller diameter EGR pipe than the
original. Thanks Ian!
The replacements parts totaled: $621 excluding tax, and the labor totaled: