Two problems related to engine have 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.
The engine just stops, no warning no lights has you slow down the engine will just come to a stop. This has happened in both cold and hot weather about a 1/2 dozen times. Dealer has not been able to locate a problem.
Leased vehicle has stopped for no reason 3 times in traffic. No indication of problems, no dashboard lights lit before vehicle stopped. The vehicle just stopped dead cold with no warning. Consumer has been in contact with dealer 3 times and taken the car in for service, the dealer could not fix the vehicle, and the vehicle has a vehicle data recorder on board. That still has not helped and problem still has not been fixed. Made a complaint to the bbb. Gm customer service and they denied the consumer's complaint. The consumer has every printout from the dealer that states the problems. The car has a pattern of problems.