Hello.
This is a fairly common situation on older vehicles with factory air ride systems. There are several aftermarket companies that offer conversion kits to switch the vehicle to a standard style suspension system. From what I can tell, the rear of this particular vehicle would require new shocks, springs and a resistor to install in place of the electronic shock connector. A quick Google search of "cadillac seville air suspension conversion" should help you find what you need.
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Sunday, September 15th, 2019 AT 9:24 PM