Cadillac Deville owners have reported 4 problems related to catalytic convertor (under the engine and engine cooling category). The most recently reported issues are listed below. Also please check out the statistics and reliability analysis of Cadillac Deville based on all problems reported for the Deville.
While driving any speed, the engine warning light illuminated. The dealer replaced the catalytic converter.
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all problems of the 2000 Cadillac Deville
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Consumer was blind, and his wife drove him around. But she was having trouble seeing because there was a foul smell that came into the vehicle, and the substance burnt her eyes. Consumer took the vehicle to the dealer/mechanic 3 times, but the problem was not resolved. Mechanic told consumer that he was waiting for a part before he could repair the problem.
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all problems of the 2002 Cadillac Deville
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Car has a very strong sulfur odor. Catalytic converter has been replaced but did not fix the problem. Car has been into service 3 times. Odor strong enough that passengers have become ill, especially when the sunroof is open. Children at school back away from car due to odor. Gm/Cadillac states it is a problem we "have to live with".
When driving there is a rotten egg odor inside. Took to dealer, and the dealer stated that the vehicle needed a catalytic converter.