The formidable 2025 GMC Sierra 3500HD AT4 stands as a testament to the unwavering spirit of American ingenuity, a masterful fusion of ruggedness and sophistication that surpasses the boundaries of conventional heavy-duty trucks. This apex predator in the automotive landscape demands attention with its audacious exterior, boasting a chiseled silhouette adorned with aggressive accents. Prepare to be captivated by its commanding presence, as the GMC Sierra 3500HD AT4 signifies the dawn of a new era in truck engineering.
Beneath the imposing exterior lies a symphony of mechanical prowess. A potent Duramax® turbo-diesel V8 engine roars to life, unleashing an untamed force of 445 horsepower and a staggering 910 lb-ft of torque. This formidable powertrain effortlessly tackles even the most grueling tasks, hauling massive payloads and towing colossal trailers with unwavering determination. The seamless integration of an Allison® 10-speed automatic transmission ensures smooth and responsive shifting, maximizing efficiency and driving pleasure. Moreover, the advanced Max Tow Package empowers the GMC Sierra 3500HD AT4 to conquer any challenge, boasting a best-in-class towing capacity of up to 36,000 pounds.
Inside the cavernous cabin, the GMC Sierra 3500HD AT4 provides an oasis of comfort and convenience. Premium materials adorn the plush seats, enveloping occupants in a luxurious embrace. The intuitive infotainment system, featuring a massive touchscreen display, offers seamless connectivity and entertainment, keeping you connected and entertained on every journey. With the latest advancements in safety technology, including adaptive cruise control, lane departure warning, and forward collision alert, the GMC Sierra 3500HD AT4 ensures peace of mind and unwavering protection for both driver and passengers. This formidable machine exemplifies the relentless pursuit of excellence, embodying the pinnacle of heavy-duty truck innovation.
Unveiling the Off-Road Beast: A Closer Look at the Sierra 3500HD AT4
The GMC Sierra 3500HD AT4 is an off-road behemoth that combines brute strength with premium amenities. Built to tackle the toughest terrain, this heavy-duty pickup truck is designed to conquer any obstacle in its path.
Exterior: Rugged Design and Aggressive Stance
The exterior of the Sierra 3500HD AT4 exudes ruggedness and capability. Its imposing front grille features a bold “AT4” logo, while the blacked-out accents, including the bumpers and wheels, give it an aggressive stance. The truck’s 35-inch Goodyear Wrangler Duratrac tires provide exceptional traction on all surfaces, empowering you to navigate treacherous trails with ease.
Features: Off-Road Prowess and Premium Comfort
The Sierra 3500HD AT4 boasts an impressive array of off-road features. Its electronically locking rear differential and hill descent control ensure stability and traction in challenging conditions. The MultiPro tailgate, with its versatile configurations, provides added functionality for camping, hauling, and other outdoor adventures. Inside, the spacious cabin offers premium amenities such as leather upholstery, heated and cooled seats, and a user-friendly infotainment system. The following table summarizes some key features:
| Feature | Description | |
|---|---|---|
| MultiPro Tailgate | Tailgate with multiple configurations for added versatility | |
| Electronically Locking Rear Differential | Ensures traction in off-road conditions | |
| Hill Descent Control | Provides controlled descents on steep slopes | |
| Leather Upholstery | Premium seating for comfort | |
| Heated and Cooled Seats | Adjustable temperature settings for optimal comfortPower and Versatility: Exploring the Engine Options———-### Base Engine: Duramax® 6.6L Turbo-Diesel V8 ###The standard powertrain for the 2025 GMC Sierra 3500HD AT4 is a beastly Duramax® 6.6L Turbo-Diesel V8 engine. This diesel workhorse produces an impressive 445 horsepower and a staggering 910 lb-ft of torque. It’s paired with a rugged 10-speed Allison® transmission, delivering exceptional towing and hauling capabilities. Whether you’re hauling heavy equipment or towing a massive trailer, the Duramax® V8 can handle the toughest jobs with ease.### The Gasoline Alternative: 6.6L Gas V8 ###If diesel isn’t your preference, the Sierra 3500HD AT4 offers a robust 6.6L Gas V8 engine. With 401 horsepower and 464 lb-ft of torque, this gasoline-powered V8 provides ample power for everyday tasks and weekend adventures. It’s also equipped with a 6-speed automatic transmission, delivering smooth and reliable performance.### Maximum Capability: Duramax® 6.6L Turbo-Diesel V8 with Max Tow Package ###For those who demand the ultimate in towing and hauling capability, the GMC Sierra 3500HD AT4 offers the Duramax® 6.6L Turbo-Diesel V8 with Max Tow Package. This powerhouse delivers an astonishing 910 lb-ft of torque, enabling you to tow up to 36,000 pounds and haul up to 7,442 pounds. This exceptional towing capacity makes the Sierra 3500HD AT4 an ideal choice for heavy-duty towing and hauling needs. | Engine |
| Engine | Horsepower | Torque |
| Duramax® 6.6L Turbo-Diesel V8 | 445 | 910 lb-ft |
| 6.6L Gas V8 | 401 | 464 lb-ft |
| Duramax® 6.6L Turbo-Diesel V8 with Max Tow Package | N/A | 910 lb-ft |
| Feature | Details | |
| Seats | Leatherette upholstery, water-resistant, bold stitching | |
| Infotainment | 12-inch touchscreen display, Apple CarPlay, Android Auto | |
| Audio | Bose premium audio system | |
| Seating Capacity | 5 passengers | |
| Storage | Lockable center console, large door pockets | |
| Climate Control | Dual-zone climate control, heated and ventilated front seats | |
| Front Differential | Rear Differential | |
| Locked | Yes | Yes |
| Automatic | Yes | Yes |
| Unlocked | Yes | Yes |
| Feature | Description | |
| Adaptive Cruise Control | Maintains a safe distance from vehicles ahead, even in stop-and-go traffic. | |
| Lane Keep Assist | Gently corrects steering to keep the vehicle centered within its lane. | |
| Blind Spot Monitoring | Warns of vehicles entering blind spots on either side of the truck. | |
| Rear Cross Traffic Alert | Detects vehicles approaching from the sides when reversing. | |
| Forward Collision Alert | Warns of potential collisions with vehicles or objects ahead. | |
| Automatic Emergency Braking | Applies the brakes automatically if a collision is imminent. | |
| Tire Pressure Monitoring System | Monitors tire pressure in real-time, alerting drivers of any potential issues. | |
| StabiliTrak Electronic Stability Control | Helps maintain stability by applying brakes individually and adjusting engine torque. | |
| Tire Size | Type | |
| 35 inches | All-Terrain | |
| 37 inches | Mud-Terrain | |
| Feature | Details | |
| Suspension Travel | Up to 10 inches in the front and 14 inches in the rear | |
| Approach Angle | 30.7 degrees | |
| Departure Angle | 23.5 degrees | |
| 2025 GMC Sierra 3500HD AT4 | ||
| Towing Capacity | 36,000 pounds | |
| Payload Capacity | 7,290 pounds |