THE INTAKE MANIFOLD GASKET IS FAILING, INTRODUCING COOLANT TO ENGINE OIL. THIS PROBLEM IS A RESULT OF A POOR DESIGN. GENERAL MOTORS HAS BEEN AWARE OF THE PROBLEM FOR YEARS. HOWEVER, GM CURRENTLY DOES NOT HAVE A RECALL ON THESE VEHICLES. WHILE THE PART ITSELF ISN'T COSTLY, THE LABOR TO REPAIR IT IS VERY INTENSIVE, AND HAS BEEN QUOTED AROUND $800. RECALLS SHOULD BE MANDATED IN ALL CASES OF INCOMPETENCE, NOT SOLELY WHEN IT AFFECTS PUBLIC SAFETY! *TR