99 Cadillac Deville Engine Overheating. The best part is, our Cadillac DeVille Engine Heaters products. Replaced gas cap at Cad dealer in New Hampshire on vacation.
DeVille has taken over Big Kahuna duties for Cadillac, ever since the rear-wheel-drive Fleetwood was dropped from the lineup two years ago. I crashed it, so I started looking for a newer one. The Cadillac DeVille had always delivered a reliable and confident engine performance, but age will make it prone to various problems.
It's prone to overheating and warping its heads and then overheating even more.
Certain engine faults, such as a leaking head gasket, poor engine running condition or exhaust blockages can also cause overheating.
Be aware of recent Cadillac Deville recalls to always be safe on the road. If an overheated engine condition exists and the. message ENGINE OVERHEATED, STOP ENGINE is. displayed, an overheat protection mode which alternates. Includes yearly updates, specifications, road test ratings and trouble spots.