Basics
Condition
Interior Color
Exterior Color
Drivetrain
Transmission
Fuel
Engine
VIN
Stock Number
Mileage
Features
Entertainment
Premium Sound System
Exterior
Tow Hitch
Alloy Wheels
LED Headlights
Sunroof/Moonroof
Seating
Leather Seats
Heated Seats
Cooled Seats
Memory Seat
Convenience
Adaptive Cruise Control
Heated Steering Wheel
Tow Hooks
Navigation System
Keyless Start
USB Port
Remote Start
Safety
Brake Assist
Automatic Emergency Braking
Stability Control
Lane Departure Warning
Rear Cross Traffic Alert
Blind Spot Monitor
Backup Camera
Seller's Comments
Meet the 2026 GMC Sierra 2500HD AT4a powerful diesel-powered crew cab built for serious work and refined capability. With its Duramax 6.6L turbodiesel engine and 10-speed automatic transmission, this 4WD truck delivers commanding performance paired with premium comfort. The stunning gray exterior complements the jet black leather interior with Kalahari accents, while the AT4 trim brings enhanced off-road readiness and aggressive styling.**Key Features:**- Duramax 6.6L V8 Turbodiesel Engine- 10-Speed Automatic Transmission with 4WD- Adaptive Cruise Control and HD Surround Vision- Gooseneck/5th Wheel Prep Package- Spray-On Bedliner with GMC Logo- Moonroof with Power Operation- Apple CarPlay and Android Auto Integration- Bose Premium 7-Speaker Sound System- Wireless Phone Projection and Charging- Remote Vehicle Starter SystemThis Sierra is packed with technology, safety, and utility features designed for those who demand excellence. The X31 Off-Road Package, 2-speed active transfer case, and hill descent control make this truck equally at home on challenging terrain or the highway. Premium leather seating, heated and ventilated front seats, and a multicolor 15-inch head-up display ensure every drive is comfortable and informed.Visit us to experience this impressive truck firsthand.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 {YMM} {Series} on sale for you! Price includes: $2000 - GMC Bonus Cash. Exp. 11/30/2026 $2500 - Buick & GMC Consumer Cash Program. Exp. 11/30/2026
View More1585 W Ogden Ave
Naperville, Illinois 60540
(630) 621-9204
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