Certified. Dark Slate Metallic 2018 GMC Sierra 1500 SLT 4D Crew Cab 4WD 6-Speed Automatic Electronic with Overdrive EcoTec3 5.3L V8 6-Speed Automatic Electronic with Overdrive, 4WD, Jet Black Leather.GMC Certified Pre-Owned Details: * 24 months/24,000 miles (whichever... via EveryCarListed.com