Certified.Certification Program Details: 12-Month/12,000-Mile Bumper-to-Bumper Limited Warranty, whichever comes first. See participating dealer and warranty booklet for limited warranty eligibility and coverage details.*Except for non-GM vehicles in the State of California, where coverage will be provided by a vehicleOnyx Black 2024 GMC Sierra 1500 Denali 4WD EcoTec3 6.2L V8 10-Speed Automatic10-Speed Automatic, 4WD, Black Leather.Odometer is 21036 miles below market average!15/19 City/Highway MPGContact Sales for more details or to schedule your test drive! (608)230-0724.