Onyx Black 2015 GMC Sierra 2500HD SLT 4WD Allison 1000 6-Speed Automatic Duramax 6.6L V8 Turbodiesel Clean Autocheck - 1 Owner, Allison 1000 6-Speed Automatic, 4WD, Jet Black w/Leather Appointed Seat Trim, Bluetooth For Phone, BOSE Sound w/7 Speaker System, Driver Alert Package, Duramax Plus Package, Heavy-Duty Trailering Equipment, Hill Descent Control, Off-Road Package, Power Sunroof, Radio: AM/FM/SiriusXM w/Navigation, SiriusXM Satellite Radio, Ultrasonic Front & Rear Park Assist, Z71 Badging. Recent Arrival! Awards: * 2015 KBB.com Brand Image Awards Reviews: * Impressive hauling and towing capabilities; carries on predecessor's refined and quiet ride; strong diesel engine; available CNG fueling for regular V8; solid build quality. Source: Edmunds * This truck was built to help you tow heavy things on a daily basis, whether it's short or long distances. Whatever the job calls for, the 2015 GMC Sierra will get it done. Source: KBB.com ** We are 15 minutes south of St. Louis. Everyone leaves happy!