Certified. Onyx Black 2018 GMC Yukon SLT 4D Sport Utility 4WD 6-Speed Automatic Electronic with Overdrive EcoTec3 5.3L V8 4WD.GMC Certified Pre-Owned Details: * Roadside Assistance * Limited Warranty: 12 Month/12,000 Mile (whichever comes first) from certified purchase... via EveryCarListed.com