I would check under the hood if I were you. Just a suggestion.
a location I experienced (second author on a 1989 coupe de ville here) is one or some of the three relays a few inches from the battery connections and I heard there may be one near the glove box or fuses inside the car (I tapped on a stuck one of the three to get the cooling fan to go off)
how do you take out a headlight switch's in a 1998 cadillac deville?
where is the idle control value on a 1995 cadillac sedan deville
The oil pressure sensor is located on the oil filter adapter on the 1994 Cadillac Sedan Deville.
You can find several relay switches on your 1990 Cadillac Sedan Deville. Most relay switches will be in the fuse box. The relay switches will be in the third column of the fuse box.
Where is the field park relay on a 1993 Cadillac Deville
about midway down the steering column
In the motor.
Behind the glove box.
The oil pump on a 95 Cadillac DeVille sedan is located under the oil pan. The oil pan must be removed to access the pump.
The 1990 Cadillac Sedan DeVille is front wheel drive. The 1990 Cadillac Sedan DeVille is front wheel drive. The 1990 Cadillac Sedan DeVille is front wheel drive.
Tell me where the turn signal flasher is on a 1996 Sedan DeVille. It is behind the panel right above the headlight switch
where is water pump located