One problem related to engine burning oil has been reported for the 1997 Cadillac Deville. The most recently reported issues are listed below.
Vehicle burns oil excessively. The vehicle may stop working at anytime. It seemed as though the engine didn't have an oil pan. The oil was changed regularly as scheduled and would burn 2 to 4 quarts between changes and began to use more between 39k to 42k miles. The manufacturer was made aware of the problem but would not help remedy the problem.