One problem related to manifold/header/muffler/tail pipe has been reported for the 1999 Cadillac Seville. The most recently reported issues are listed below.
Tl- the contact owns a 1999 Cadillac Seville. The contact stated that there was an internal fracture of a component which was causing oil to leak, excessive smoke and an abnormal smell. The exhaust manifold and the engine was being affected by the failure in which this could cause a fire due to the leak and high temperatures. The vehicle was taken to the dealer who replaced 11 gaskets within the engine and the failure recurred as the vehicle continued to smoke. The vehicle was to be taken back to the dealer for further inspection and diagnosis. The contact was not included in NHTSA campaign number: 99v070000 (electrical system). The manufacturer was notified of the failure. The approximate failure mileage was 103,000. Dyd.