One problem related to engine cooling system has been reported for the 2004 Cadillac Deville. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2004 Cadillac Deville based on all problems reported for the 2004 Deville.
2004 Cadillac Deville. As second owner of this car vibration of front end over 60 mph continued. Rotation of tires did not fix the problem. Alignment did. New problem: coolant leak, the source of which could not be located after three trips to shop. Stop leak added on first trip; not effective. 2nd trip to Cadillac dealer, dex added. Seems to do the job. For how long? still feels unsafe for long-distance driving. Ok for in town.