6-Speed Automatic Electronic with Overdrive, 4WD, Saddle Leather. 2015 Chevrolet Silverado 1500 High CountryRecent Arrival! EcoTec3 5.3L V8 Odometer is 15637 miles below market average! Black 6-Speed Automatic Electronic with OverdriveReviews:* Powerful, fuel-efficient engines; many available configurations; well-built, comfortable interior; quiet highway ride. Source: Edmunds* If you don’t already like the 2015 Silverado for the mere fact that it’s a Chevy, this pickup makes a compelling case for itself with a sophisticated yet intuitive infotainment system, refined interior and an available V8 engine with class-leading power output. Source: KBB.com