"Is adventure calling The 2026 GMC Sierra 3500HD AT4 is ready to take you there. 2026 GMC Sierra 3500HD AT4 4D Crew Cab Sterling Metallic Bluetooth, Backup Camera, Android Auto, Apple CarPlay, Moonroof / Sunroof, Adaptive Cruise Control, Spray In Bed Liner, Sierra 3500HD AT4, 4D Crew Cab, 6.6L V8, 10-Speed Automatic, 4WD, Sterling Metallic, Jet Black With Kalahari Accents Leather, 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, 220 Amp Alternator, AT4 Preferred Package, AT4 Premium Plus Package, Auto-Dimming Inside Rearview Mirror with Camera, 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, Gloss Black Header and Grille Insert Bars, Gooseneck/5th Wheel Prep Package, HD Surround Vision, Heated 2nd Row Outboard Seats, Heated Driver and Front Outboard Passenger Seats, Hill Descent Control, Keyless Open and Start, LED Cargo Area Lighting, LED Smoked Amber Roof Marker Lamps, Manual Tilt-Wheel/Telescoping Steering Column, Multicolor 15"" Diagonal Head-Up Display, Off-Road High Clearance Step, Off-Road Suspension, Power Front Windows with Passenger Express Up/Down, Power Sliding Rear Window with Defogger, Power Sunroof, Preferred Equipment Group 4SB, Premium Front Floor Liners with Removable Carpet Insert, Premium Rear Floor Liners with Removable Carpet Insert, Push Button Start, Rear Cross Traffic Alert, Rear Wheelhouse Liners, Remote Vehicle Starter System, Safety Alert Seat, SiriusXM with 360L Trial Subscription, Snow Plow Prep/Camper Package, Spray-on Pickup Bedliner with GMC Logo, Steering Wheel Audio Controls, Technology Package, 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, Wireless Phone Projection, X31 Off-Road Package. 6.6L V8 4WD 10-Speed Automatic Stop by Woody Buick GMC Naperville, an 11-time GM Dealer of the Year and Mark of Excellence recipient, to schedule a test drive! See for yourself why this J.D. Power 2026 Dealer of Excellence is Illinois' 1 Sales Volume Buick GMC destination and Chicagoland's most awarded dealer. Take advantage of our award-winning service and the best incentives around! We have a 2026 GMC Sierra 3500HD AT4 on sale for you! Price includes: $1000 - Buick & GMC Consumer Cash Program. Exp. 06/30/2026"