"Onyx Black 2026 GMC Sierra 3500HD Denali 4WD 10-Speed Automatic Duramax 6.6L V8 Turbodiesel Fully Detailed, 10-Speed Automatic, 4WD, Black Leather.Denali Reserve Package (Power Sunroof), Gooseneck/5th Wheel Prep Package, Preferred Equipment Group 5SA (120-Volt Bed Mounted Power Outlet, 120-Volt Instrument Panel Power Outlet, 2 Charge-Only Rear USB Ports, 2 Charge/Data USB Ports Inside Center Console, 2 USB Ports, 2-Speed Active Transfer Case, Bed View Camera with Two Trailer Camera Provisions, Bose Premium 7-Speaker Sound System, Deep-Tinted Glass, Electric Rear-Window Defogger, Floor-Mounted Center Console, Front Rain-Sensing Wipers, HD Surround Vision, Heated 2nd Row Outboard Seats, Heated Driver and Front Outboard Passenger Seats, Keyless Open and Start, LED Cargo Area Lighting, LED Smoked Amber Roof Marker Lamps, Manual Tilt-Wheel/Telescoping Steering Column, Polished Exhaust Tip, Power Front Windows with Passenger Express Up/Down, Power Sliding Rear Window with Defogger, Push Button Start, Rear Cross Traffic Alert, Remote Vehicle Starter System, Safety Alert Seat, Signature Chrome Denali Grille, SiriusXM with 360L Trial Subscription, Spray-on Pickup Bedliner with GMC Logo, Steering Wheel Audio Controls, Trailer Camera Provisions, Trailer Side Blind Zone Alert, Ultrasonic Front and Rear Park Assist, Unauthorized Entry Theft-Deterrent System, Universal Home Remote, Ventilated Driver and Front Passenger Seats, Wireless Charging, and Wireless Phone Projection), Technology Package (Auto-Dimming Inside Rearview Mirror with Camera and Multicolor 15"""" Diagonal Head-Up Display), 10-Speed Automatic, 4WD, Black Leather, 12-Way Power Driver Seat Adjuster with Lumbar, 12-Way Power Passenger Seat Adjuster with Lumbar, 3 Years SiriusXM, 4-Wheel Disc Brakes, 7 Speakers, ABS brakes, Air Conditioning, All-Weather Floor Liners, Alloy wheels, AM/FM radio: SiriusXM with 360L, Auto High-beam Headlights, Auto-dimming door mirrors, Auto-dimming Rear-View mirror, Automatic Emergency Braking, Automatic temperature control, Brake assist, Buckle to Drive, Bumpers: body-color, Cargo Tie-Down Rings (set of 4), Compass, Console-Mounted Safe, Delay-off headlights, Driver door bin, Driver Memory, Driver vanity mirror, Dual 220-Amps Primary and 170-Amps Auxiliary Alternators, Dual front impact airbags, Dual front side impact airbags, Electronic Stability Control, Emergency communication system: OnStar Services capable, Engine Block Heater, Exhaust Brake, Exterior Parking Camera Rear, Following Distance Indicator, Forge Perforated Leather Seat Trim, Forward Collision Alert, Front anti-roll bar, Front Bucket Seats, Front Center Armrest, Front dual zone A/C, Front fog lights, Front Pedestrian Braking, Front reading lights, Front wheel independent suspension, Fully automatic headlights, Garage door transmitter, Genuine wood dashboard insert, Genuine wood door panel insert, GMC MultiPro Tailgate Step Lights, GMC Premium 13.4"""" Diagonal Information Display, Heated door mirrors, Heated front seats, Heated rear seats, Heated steering wheel, Heavy-Duty 80 Amp-Hour Battery, High Idle Switch, Hitch Guidance with Hitch View, Illuminated entry, IntelliBeam Automatic High Beam on/Off, Lane Departure Warning System, Low tire pressure warning, Memory seat, Occupant sensing airbag, Outside temperature display, Overhead airbag, Overhead console, Panic alarm, Passenger door bin, Passenger vanity mirror, Pickup Bed, Power door mirrors, Power driver seat, Power passenger seat, Power steering, Power windows, Power-Retractable Assist Steps, Premium audio system: Premium GMC Infotainment System, Radio: AM/FM Stereo with Premium GMC Infotainment System, Rain sensing wipers, Rear reading lights, Rear seat center armrest, Rear step bumper, Rear window defroster, Remote keyless entry, Security system, Speed control, Speed-sensing steering, Split folding rear seat, Steering wheel mounted audio controls, Tachometer, Telescoping ste"