Deville was improved for the year 2000. It was during this time when there was massive restyling undergone. The Deville's Wheelbase increased by 1.5 inches, but the body was two inches shorter and narrower than in the previous models. Under the hood were its familiar Northstar V8 engines, that makes 300 horsepower in the DTS and 275 bhp in other models. But there are still standard on DTS, the Traction control and all-disc antilock, the Cadillac's StabiliTrak antiskid system, which is optional on other models, and a Continuously Variable Road Sensing Suspension.

The year of much restyling of models for 2000, bring all Cadillac DeVilles with GM's OnStar emergency or communications system, a front side airbags, and newly optional rear side airbags. There was also New taillamps used LED technology, which help the car to illuminate faster, plus Night Vision that used infrared technology to project nice image to view the car ahead into the windshield. Trim level names of the cars were changed in the year 2000. The former d'Elegance and Concours become DHS or the Deville High Luxury Sedan and DTS or the Deville Touring Sedan. However, Eldorado and Seville were keep the name convention.