you will first need a 13 mm socket and would be helpful to have a universal or swivel to fit the socket around the frame for the front bolts once all loose you should be able to slide it backwards without lifting the engine might take a little tugging on the back be should come out and go back in fairly easy
Cadillac stopped making the Coupe DeVille after 1993.
Cadillac Coupe DeVille
where is the horns for 1978 cadillac
The starter solenoid on a 1986 Cadillac Coupe Deville is located under the front of the vehicle. It is to the left of the oil pan.
In my 83 cadillac sedan deville it up by the break petal next to the firewall.
I believe it was 1976