Onyx Black 2026 GMC Sierra 2500HD AT4 4WD 10-Speed Automatic Duramax 6.6L V8 Turbodiesel 10-Speed Automatic, 4WD, Jet Black With Kalahari Accents Leather, 220-Amp Alternator, AT4 Preferred Package, AT4 Premium Plus Package, Gooseneck/5th Wheel Prep Package, Heated Driver and Front Outboard Passenger Seats, Heated steering wheel, Hill Descent Control, Hitch Guidance with Hitch View, in-Vehicle Trailering System App, Inside Rearview Auo-Dimming Rear Camera Mirror, LED Smoked Amber Roof Marker Lamps, Multicolor 15"" Diagonal Head-Up Display, Off-Road Suspension, Perforated Leather-Appointed Front Seat Trim, Power Sliding Rear Window with Defogger, Power Sunroof, Remote keyless entry, Remote Vehicle Starter System, SiriusXM with 360L Trial Subscription, Snow Plow Prep/Camper Package, Technology Package, Universal Home Remote, Ventilated Driver and Front Passenger Seats, X31 Off-Road Package.Also included with every new vehicle we sell: LIFETIME ""NO FEAR"" WARRANTY, FIRST OIL CHANGE, and AT HOME COURTESY DELIVERY! Call us for full details! We pride ourselves on honesty and integrity, but please note that mistakes or misprints due to human error are possible. Find out why our dealerships have won DealerRater.com DEALER OF THE YEAR a whopping 10 TIMES! Call, email, or live chat with one of our friendly sales professionals now to schedule your test drive! Prices shown do not include tax, title, registration and $599 service fees. Price includes: $1000 - Buick & GMC Consumer Cash Program. Exp. 06/30/2026