Clean CARFAX. 6-Speed Automatic Electronic with Overdrive, 4WD, Jet Black. Summit White 2018 GMC Sierra 1500 SLE 4WD 6-Speed Automatic Electronic with Overdrive EcoTec3 5.3L V8 We realize that you have lots of choices when leasing or buying an automobile and our desire is to ensure you have the best car buying experience. We consider customer satisfaction to be our highest priority. Throughout each of our departments, the emphasis is always on putting our customers' needs first. We pride ourselves on listening to the needs of our customers. Everything we do is designed to make your car buying or leasing experience as easy and enjoyable as possible. Competitive pricing, knowledgeable staff and superior customer service all add up to create a simple and painless way to purchase a world class automobile at a great price.