- 2011 Cadillac STS VIN 1G6DW6ED5B0105699 - from Fairfield's Cadillac Buick GMC by EveryCarListed.com Take a look at this 2011 Cadillac STS that we have at, Fairfield's Cadillac Buick GMC. This 4 Door Sedan comes equipped with the following electronic features; Audio System Premium Brand Speakers: Bose. For your peace of mind, this STS also comes with the following safety features; Braking Assist. We would love to talk to you more about this STS. Please contact us for more information.