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No it should not. They have a ride height switch, which cycles the compressor. You probably have an air leak in the system.
A person can reset the air ride suspension on a Cadillac Deville by disconnecting the compressor wiring harness from the compressor itself. This is accomplished by putting the vehicle on ramps.
mine is a 98 and the switch is located under dash on passenger side on the side kick plate.
I think they have air ride shocks in the rear not the whole suspension.
There is a ball joint on the lower control arms of the suspension that allows a rod to connect to a ride height sensor and this is how it figures out what the suspension is doing and it uses a hydraulic system to change the suspension.
Air ride compressor, air suspension compressor, and air pump are the names used for the same device. They are used to pump up the air suspension.
The Level Ride Compressor on your '96 DeVille is located underneath the car near the right rear wheel. Just follow the plastic tube from the air-shock to pinpoint it.
I believe the on / off switch for the air suspension system is in the cargo area , on the drivers side , behind the removable plastic panel where the wheel jack is located
The CD changer is located in the trunk on the drivers side next to the switch to turn off the air ride suspension.
I had a '94 Continental with the same issue. I left the switch on and pulled the fuse for the air pump.
To replace the air ride compressor on a 1999 Cadillac DeVille Concours remove the air shocks located under each wheel and replace it.
round cylinder on front of air ride compresor