The restyled and improved heated and cooled front seats and a heated steering wheel are newly available for 2004 in Cadillac's largest car. DeVille comes in base and DHS models with a front bench seat, and as the sportier DTS with front buckets. The DHS has elegantly gathered leather upholstery, while DTS has stretched perforated leather which make it looks sporty. Deville use a 4.6-liter V8, rated at 300 hp in the DTS, while 275 in the others. They have a 4-speed automatic transmission, traction control, ABS, and load-leveling suspension. An antiskid system, and Front side airbags are standard in DTS, but the Rear side airbags are optional.

 

Unlike the previous model of Cadillac, its Night Vision is now available, which uses infrared technology that detects heat-generating objects, although it was last redesigned for the 2000 model year. The car redesigned style distinguishes Deville from other cars. The exterior part of the car has a large front lighting clusters and an eggcrate grille that gives DeVille a bold appearance. And its interior part is roomy and luxurious. When observed from the rear, the DeVille carries the traditional Cadillac atmosphere, but with a far more modern flair. The tail lamps of the car were redesigned for 2003, these rely on Cadillac's industry-leading LED technology that light up significantly faster than normal incandescent units. The tail lamps help drivers of following cars a second warning, to prevent any collision.