One problem related to engine exhaust system has been reported for the 1997 Cadillac Seville. The most recently reported issues are listed below.
Vehicle has developed a major leak that is pumping oil onto the exhaust system. Nlm oil leak caused by a faulty rear main seal. Engine was running rough due to faulty 02 sensor, fuel gauge reading erratically due to bad spot on sender. While driving and hitting a bump, there was a rattle under the vehicle, dealer replaced the right strut and mount.