Adventure awaits behind the wheel of the 2025 GMC Sierra 3500HD AT4, available now in stunning Summit White with a bold Black interior featuring Kalahari accents. As Stock #T4340065 sits poised on our lot, it offers a compelling blend of sophistication and rugged capability. Powered by a formidable Duramax 6.6L Turbo-Diesel V8 engine, seamlessly paired with an Allison 10-speed automatic transmission, this powerhouse delivers an impressive 470 horsepower with 975 lb-ft of torque for commanding performance on and off the road. This Sierra 3500HD AT4 is designed for the driver who demands excellence in every detail, featuring the AT4 Premium Plus Package, which includes a power sunroof and the cutting-edge Technology Package for an immersive driving experience. Those seeking adventures will appreciate the equipped Gooseneck / 5th Wheel Prep Package, ensuring you’re ready to haul with ease. Whether navigating through city streets or cruising the countryside, the embedded navigation system ensures you are on the right path. The AT4’s 4x4 capability guarantees that no road is off limits, while the bed liner protects your truck during even the most ambitious of payloads. A suite of smart safety features, including front collision warning, rear parking aid, and lane departure warning, stand sentinel to offer peace of mind during every journey. The LED headlights and automatic high beams illuminate the path ahead, further enhanced by the running boards for effortless cabin entry, and rain-sensing wipers providing clear vision during unpredictable weather. Inside, passengers are treated to heated front seats, a heated steering wheel, and even a wifi hotspot - redefining cabin comfort and connectivity. This Sierra 3500HD AT4 doesn't just meet expectations; it surpasses them, bringing together luxury and utility with its powerful diesel engine and premium interior amenities. Experience the unwavering strength and sophisticated style of this exceptional truck, ready to take on any challenge that lies ahead. Stock #T4340065

• Summit white
• AT4 PREFERRED EQUIPMENT GROUP includes standard equipment
• GVWR 12 100 LBS. (5488 KG) WITH SINGLE REAR WHEELS
• 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).
• LPO OFF-ROAD HIGH CLEARANCE STEP (dealer-installed)
• Power Mirror(s)
• Keyless Start
• Intermittent Wipers
• Tow Hitch
• Running Boards/Side Steps
• Tow Hooks
• Four Wheel Drive
• Aluminum Wheels
• Power Steering
• Rain Sensing Wipers
• Fog Lamps
• Power Folding Mirrors
• Locking/Limited Slip Differential
• ABS
• Variable Speed Intermittent Wipers
• Requires Subscription
• Automatic Highbeams
• Navigation System
• Tires - Front All-Terrain
• Bluetooth Connection
• Front Collision Mitigation
• 4-Wheel Disc Brakes
• Mirror Memory
• Security System
• Blind Spot Monitor
• Heated Steering Wheel
• WiFi Hotspot
• Front Head Air Bag
• Keyless Start
• Front Collision Warning
• Leather Seats
• Cruise Control
• Climate Control
• Aerial View Display System
• Power Passenger Seat
• Back-Up Camera
• Smart Device Integration
• Rear Head Air Bag
• Premium Sound System
• Adaptive Cruise Control
• Heated Front Seat(s)
• Passenger Adjustable Lumbar
• Bucket Seats
• Floor Mats
• Keyless Entry
• Power Driver Seat
• Remote Engine Start
• Front Collision Mitigation
• Pass-Through Rear Seat
• Driver Adjustable Lumbar
• Power Door Locks
• Rear Parking Aid
• Steering Wheel Audio Controls
• Cross-Traffic Alert
• MP3 Capability

• Jet black with kalahari accents, perforated front leather seating surfaces
• REAR AXLE 3.42 RATIO
• TRANSMISSION ALLISON 10-SPEED AUTOMATIC
• AT4 PREMIUM PLUS PACKAGE includes (PDO) AT4 Preferred Package (CF5) power sunroof (CWM) Technology Package and (VXW) Off-Road High Clearance step LPO
• 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.)
• Front Collision Warning
• AM/FM Stereo
• Tires - Rear All-Terrain
• LED Headlights
• Automatic Highbeams
• Smart Device Integration
• Bed Liner
• Bluetooth Connection
• Heated Mirrors
• Auxiliary Audio Input
• Privacy Glass
• Power Windows
• Conventional Spare Tire
• Auxiliary Audio Input
• Heated Front Seat(s)
• Daytime Running Lights
• Integrated Turn Signal Mirrors
• Lane Departure Warning
• Floor Mats
• Daytime Running Lights
• Integrated Tailgate Step
• Multi-Zone A/C
• Telematics
• Requires Subscription
• Auto-Dimming Rearview Mirror
• Tire Pressure Monitor
• Cooled Front Seat(s)
• Auxiliary Audio Input
• Traction Control
• Passenger Air Bag Sensor
• Front Side Air Bag
• Rear Defrost
• Rear Bench Seat
• Passenger Air Bag
• Front Collision Mitigation
• Satellite Radio
• Tire Pressure Monitor
• Front Collision Warning
• Requires Subscription
• Power Door Locks
• Seat Memory
• Driver Air Bag
• Telematics
• Bluetooth Connection
• Driver Restriction Features
• Heated Rear Seat(s)
• Requires Subscription
• Back-Up Camera
• Power Windows
• Lane Departure Warning
• Adjustable Steering Wheel
• Stability Control
• Daytime Running Lights
• MP3 Capability
• MP3 Capability