- 2006 Cadillac STS VIN 1G6DC67A660186388 - Certified Used Cadillac for sale from Vera Cadillac by EveryCarListed.com Interested in the comfort and ease of a luxury car? Check out this roomy Light Brown 2006 Cadillac STS with a Cashmere interior. Inside, you'll find a Navigation System, Audio System Premium Brand Speakers: Bose and more. You can also ride with confidence with the Child Safety Locks, Fog Lamps, Braking Assist and more. We would love to put you in the driver's seat of this STS. Please contact us for more information.