Cadillac loved to confuse buyers by using similar names for their cars. The Fleetwood and Fleetwood Sixty Special were upscale front-wheel drive DeVilles; but the "Fleetwood" Brougham was a rear-wheel drive units.

The Fleetwood Cadillac was available as a coupe model as well as a sedan for 1989. Both versions shared the de Ville's new sheet metal and added interior and exterior dimensions. Both Fleetwoods had new rear fender skirts. A fully padded vinyl roof was standard on the sedan. The coupe featured a standard formal cabriolet roof. The electroluminescent wreath and crest sail panel ornament were standard for the sedan. The Fleetwood's seats were of a tufted design with elite cloth inserts with Primavera cloth bolsters. The new center armrest offered as an option for the de Ville was standard for the Fleetwood interior which also had the revisions provided for the de Ville. Except on those fitted with the Astroroof option, all Fleetwood sedans had new illuminated overhead vanity mirrors. The Fleetwood's revised and enlarged trunk was identical to the de Ville's. The Fleetwood also had the de Ville's new floor mats, driver's express down window as well as its new mirrors and heated windshield options. The Fleetwood interior now had a real wood nameplate on the glovebox with "Fleetwood" in gold script. The interior trim was in high-gloss American walnut. Joining the standard features found on the 1989 de Villes were the Fleetwood's remote release fuel filter door, trumpet horn, and wire wheel covers.