2026 GMC Sierra 3500HD AT4 Crew Cab 4WD

KEY FEATURES INCLUDE 10-Way Power Driver Seat Adjuster with Lumbar - Includes Driver seat direction: Driver seat with 8-way directional controls,Driver lumbar: Driver seat with 2-way power lumbar,Power driver seat controls: Driver seat power reclining, lumbar support, cushion tilt, fore/aft control and height adjustable control, 12,250 lbs (5,557 Kgs) GVWR, 20 High Gloss Black 8 Spoke Aluminum Wheels - Includes Wheel covers: Wheel hub covers,Wheels: 20 x 8.5-inch front and rear black aluminum wheels, 220 Amp Alternator, 3 Years SiriusXM, 3.42 Rear Axle Ratio, AM/FM Stereo with Premium GMC Infotainment System - Includes GMC Premium 13.4 Diagonal Information Display,Primary display size: 13.4 inch primary display,Primary display touchscreen: Primary monitor touchscreen,Voice activated audio: Premium GMC Infotainment System voice activated audio controls,Wireless streaming: Wireless audio streaming,Handsfree: Handsfree wireless device connectivity,Built-in virtual assistant, AT4 Preferred Package - Includes Power Sliding Rear Window with Defogger,Rear windshield: Power rear windshield,LED Smoked Amber Roof Marker Lamps,Universal Home Remote, AT4 Premium Plus Package - Includes Power Sunroof,First-row sunroof: First-row sliding and tilting glass sunroof with express open/close activation sunshade, Black Power-Retractable Assist Steps, Driver Memory, Duramax 6.6L Turbo-Diesel V8 Engine - Includes 10-Speed Automatic Transmission,Transmission: Allison 10-speed automatic,Overdrive transmission,Lock-up transmission,Transmission electronic control,Transmission Type: Automatic,Capped Fuel Fill,Dual Heavy-Duty 70 Amp-Hour Battery,Battery type: Dual lead acid batteries,Battery run down protection,Accessory power: Retained accessory power,Engine Location: Front mounted engine,Fuel Type: Diesel,Ignition: Compression ignition system,Engine Mounting direction: Longitudinal mounted engine,Engine block material: Iron engine block,Cylinder head material: Aluminum cylinder head,DEF fluid gauge: Diesel exhaust fluid (def) gauge,Low level warnings: Low level warning for oil, coolant, fuel, washer fluid, brake fluid and diesel exhaust fluid (DEF),Tailpipe: Stainless steel single exhaust,Engine: Duramax 6.6L V-8 diesel direct injection, intercooled turbo, diesel, engine with 470HP,Engine Short: Duramax 6.6L V-8,Engine Configuration: Duramax V8,Compressor: Intercooled turbo, Engine Block Heater, Exhaust Brake, Federal Emissions Requirements, Front Bucket Seats - Includes 10-Way Power Passenger Seat Adjuster with Lumbar,Passenger seat direction: Front passenger seat with 8-way directional controls,Front passenger lumbar: Front passenger seat with 2-way power lumbar,Power passenger seat controls: Passenger seat power reclining, lumbar support, cushion tilt, fore/aft control and height adjustable control, Front License Plate Kit, GMC MultiPro Tailgate Step Lights, Gooseneck/5th Wheel Prep Package - Includes Towing wiring harness: Trailer wiring harness,Towing prep: 5th wheel and gooseneck prep, Hitch Package, LT275/65R20E 126/123 Off-Road T/A KO3 Tires - Includes Tires: LT275/65SR20 AT BSW front and rear tires, Pickup Bed - Includes Box style: Standard style pickup box,Boxside steps: BedStep integrated side steps, Preferred Equipment Group 4SB - Includes LED Cargo Area Lighting,Trailer Side Blind Zone Alert,SiriusXM with 360L Trial Subscription,Radio: AM/FM/SiriusXM with 360Lsatellite,Remote Vehicle Starter System,Keyfob remote start,Smart device remote start,Safety Alert Seat,Ultrasonic Front and Rear Park Assist,Trailer Camera Provisions,Electric Rear-Window Defogger,Floor-Mounted Center Console,Beverage holders: Front beverage holders,Floor console: Full floor console,Floor console storage: Covered floor console storage,Rear console climate control ducts,Armrests front center: Front seat center armrest,Unauthorized Entry Theft-Deterrent System,Bed View Camera with Two Trailer Camera Provisions,Front