2026 GMC Sierra 3500HD AT4

Price includes: $500 - Buick & GMC Consumer Cash Program. Exp. 09/02/2025 2026 GMC Sierra 3500HD AT4 4WD Sterling Metallic Off-Road Luxury & Heavy-Duty CapabilityDiscover uncompromising strength, off-road performance, and premium comfort with this 2026 GMC Sierra 3500HD AT4 Crew Cab 4WD, now available at Whitaker GMC in Forest Lake, Minnesota. Finished in eye-catching Sterling Metallic with Jet Black leather seating and Kalahari accents, this truck is built to handle your toughest jobs and weekend adventures in style.Power & Off-Road Capability6.6L Duramax Turbo-Diesel V8 paired with a 10-Speed Automatic Transmission for maximum torque and towing4WD with 2-Speed Active Transfer Case and X31 Off-Road Package for rugged terrain readinessGooseneck/5th Wheel Prep Package and Snow Plow Prep/Camper Package for unmatched versatilityHill Descent Control and Off-Road High Clearance Steps (LPO)Spray-On Bedliner with GMC Logo and LED Cargo Area LightingBed View Camera and multiple trailer camera provisions for safer, easier towingPremium Comfort & DesignHeated and ventilated front seats, heated 2nd row outboard seats, and heated steering wheelPower moonroof, power sliding rear window with defogger, and memory drivers seatFloor-mounted center console and premium front/rear floor liners with removable carpet insertsGloss Black grille accents and smoked amber roof marker lamps for a bold AT4 appearanceAdvanced Technology & SafetyGMC Premium 13.4 Infotainment Display with Wireless Apple CarPlay & Android AutoBose Premium 7-Speaker Sound System for exceptional audio qualityMulticolor 15 Head-Up Display and Technology Package for next-level driving infoForward Collision Alert, Front Pedestrian Braking, and Following Distance IndicatorRear Cross Traffic Alert, Trailer Side Blind Zone Alert, HD Surround Vision, and Safety Alert SeatUltrasonic Front & Rear Park Assist and Unauthorized Entry Theft-Deterrent SystemWireless Charging and multiple USB ports throughout the cabinPackages & ExtrasAT4 Preferred Package and AT4 Premium Plus PackageTechnology Package and Preferred Equipment Group 4SBUniversal Home Remote and deep-tinted glass for style and convenienceSee the 2026 GMC Sierra 3500HD AT4 in person at Whitaker GMC in Forest Lake, Minnesotayour source for professional-grade trucks with luxury, capability, and off-road performance.Includes The Whitaker Lifetime Powertrain Warranty!

• REAR CAMERA MIRROR inside rearview auto-dimming with full camera display
• GOOSENECK / 5TH WHEEL PREP PACKAGE -- Hitch platform to accept Gooseneck or 5th Wheel hitch. Includes hitch platform with tray to accept ball stamped bed holes with removable caps installed and bed mounted 7-pin trailer harness (similar to UY2 harness).
• LICENSE PLATE KIT FRONT
• TIRES LT275/65R20 ALL-TERRAIN BLACKWALL (STD)
• AUDIO SYSTEM 13.4 DIAGONAL PREMIUM GMC INFOTAINMENT SYSTEM with Google built in apps such as navigation and voice assistance includes color touch-screen multi-touch display AM/FM stereo Bluetooth streaming audio for music and most phones
• featuring wireless Android Auto and Apple CarPlay capability for compatible phones. (STD)
• TECHNOLOGY PACKAGE includes (DRZ) Rear Camera Mirror and (UV6) Multicolor 15 Diagonal Head-Up Display
• TRANSMISSION 10-SPEED AUTOMATIC
• HIGH IDLE SWITCH
• ENGINE DURAMAX 6.6L TURBO-DIESEL V8 B20-DIESEL COMPATIBLE (470 hp [350.5 kW] @ 2800 rpm 975 lb-ft of torque [1322 Nm] @ 1600 rpm) (Includes (K05) engine block heater.)
• WINTER GRILLE COVER
• TRAILER TIRE PRESSURE MONITOR SENSORS includes set of 4 sensors. Sensor functionality requires (UET) In-vehicle Trailering App to be ordered with the vehicle and installed by the factory. Sensors will be shipped loose with the truck and will need to be installed on trailer by customer. System is capable of monitoring up to 6 wheels. Additional or replacement sensors are available through GM Accessories
• WINDOW POWER REAR SLIDING with rear defogger
• SNOW PLOW PREP/CAMPER PACKAGE includes (KW5) 220-amp alternator includes increased front GAWR on Heavy Duty models (NZZ) skid plates (transfer case and oil pan) pass through dash grommet hole and roof emergency light provisions. Contact GM Upfitter Integration at www.gmupfitter.com for plow installation details and assistance. Note: if ordered for Camper usage recommend ordering (UY2) Trailering wiring provisions (Includes (KW5) 220-amp alternator
• UNIVERSAL HOME REMOTE
• ENGINE BLOCK HEATER
• SUNROOF POWER
• AT4 PREFERRED EQUIPMENT GROUP includes standard equipment
• LAMPS SMOKED AMBER ROOF MARKER (LED)
• STERLING METALLIC
• LPO OFF-ROAD HIGH CLEARANCE STEP (dealer-installed)
• AT4 PREMIUM PLUS PACKAGE includes (PDO) AT4 Preferred Package (CF5) power sunroof (CWM) Technology Package and (VXW) Off-Road High Clearance step LPO
• REAR AXLE 3.42 RATIO
• GVWR 12 100 LBS. (5488 KG) WITH SINGLE REAR WHEELS
• EXHAUST BRAKE
• WHEELS 20 (50.8 CM) HIGH GLOSS BLACK ALUMINUM WHEELS 8 SPOKES (STD)
• AT4 PREFERRED PACKAGE includes (UG1) Universal Home Remote (A48) rear sliding power window and (U01) Roof Marker Lamps
• ALTERNATOR 220 AMPS
• SEATS FRONT BUCKET WITH CENTER CONSOLE (STD)
• MULTICOLOR 15 DIAGONAL HEAD-UP DISPLAY
• JET BLACK WITH KALAHARI ACCENTS PERFORATED FRONT LEATHER SEATING SURFACES
• Lane Departure Warning
• Front Collision Mitigation
• Front Collision Warning
• Automatic Highbeams
• Tow Hitch
• Running Boards/Side Steps
• Keyless Start
• Locking/Limited Slip Differential
• Four Wheel Drive
• Tow Hooks
• Power Steering
• ABS
• 4-Wheel Disc Brakes
• Aluminum Wheels
• Tires - Front All-Terrain
• Tires - Rear All-Terrain
• Conventional Spare Tire
• Bed Liner

• Daytime Running Lights
• LED Headlights
• Automatic Highbeams
• Fog Lamps
• Heated Mirrors
• Power Mirror(s)
• Integrated Turn Signal Mirrors
• Power Folding Mirrors
• Intermittent Wipers
• Variable Speed Intermittent Wipers
• Rain Sensing Wipers
• Privacy Glass
• Integrated Tailgate Step
• AM/FM Stereo
• Navigation System
• MP3 Capability
• Bluetooth Connection
• Auxiliary Audio Input
• Smart Device Integration
• Satellite Radio
• Requires Subscription
• Satellite Radio
• Requires Subscription
• Premium Sound System
• Bluetooth Connection
• Bluetooth Connection
• Smart Device Integration
• WiFi Hotspot
• Bucket Seats
• Leather Seats
• Power Driver Seat
• Driver Adjustable Lumbar
• Power Passenger Seat
• Passenger Adjustable Lumbar
• Pass-Through Rear Seat
• Rear Bench Seat
• Heated Front Seat(s)
• Heated Front Seat(s)
• Cooled Front Seat(s)
• Heated Rear Seat(s)
• Mirror Memory
• Seat Memory
• Floor Mats
• Floor Mats
• Heated Steering Wheel
• Adjustable Steering Wheel
• Steering Wheel Audio Controls
• Tire Pressure Monitor
• Power Windows
• Power Windows

• Power Door Locks
• Remote Engine Start
• Keyless Entry
• Power Door Locks
• Keyless Start
• Cruise Control
• Adaptive Cruise Control
• Security System
• MP3 Capability
• Auxiliary Audio Input
• MP3 Capability
• Auxiliary Audio Input
• Climate Control
• Multi-Zone A/C
• A/C
• Rear Defrost
• Auto-Dimming Rearview Mirror
• Front Collision Mitigation
• Front Collision Warning
• Traction Control
• Stability Control
• Daytime Running Lights
• Daytime Running Lights
• Driver Air Bag
• Passenger Air Bag
• Front Side Air Bag
• Front Head Air Bag
• Rear Head Air Bag
• Passenger Air Bag Sensor
• Telematics
• Requires Subscription
• Rear Parking Aid
• Back-Up Camera
• Aerial View Display System
• Back-Up Camera
• Cross-Traffic Alert
• Blind Spot Monitor
• Lane Departure Warning
• Front Collision Warning
• Front Collision Mitigation
• Driver Restriction Features
• Tire Pressure Monitor
• Telematics
• Navigation from Telematics
• Requires Subscription