The Chevrolet Silverado 3500 HD IV, specifically the 2024 Double Cab Long Bed configuration equipped with the 6.6-liter Duramax Turbo Diesel V8 engine producing 470 horsepower and paired with a 10-speed Allison automatic transmission and four-wheel drive, represents the pinnacle of capability within Chevrolet’s heavy-duty truck lineup. Introduced as part of the refreshed T1XX generation in 2024, this variant caters to buyers requiring substantial towing and hauling capacity without sacrificing a degree of everyday usability. It occupies the upper echelon of the Silverado 3500 HD range, positioned above trims with gasoline engines and lower output diesel options.
Technical Specifications
| Brand | Chevrolet |
| Model | Silverado 3500 HD |
| Generation | Silverado 3500 HD IV (T1XX, facelift 2024) Double Cab Long Bed |
| Type (Engine) | 6.6 Duramax TD V8 (470 Hp) 4WD SRW Automatic |
| Start of production | 2024 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Pick-up |
| Seats | 5 |
| Doors | 4 |
| Fuel Type | Diesel |
| Weight-to-power ratio | 7.5 kg/Hp, 132.6 Hp/tonne |
| Weight-to-torque ratio | 2.7 kg/Nm, 373 Nm/tonne |
| Power | 470 Hp @ 2800 rpm |
| Power per litre | 71.2 Hp/l |
| Torque | 1322 Nm @ 1600 rpm (975.06 lb.-ft. @ 1600 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | L5P |
| Engine displacement | 6604 cm3 (403 cu. in.) |
| Number of cylinders | 8 |
| Engine configuration | V-engine |
| Cylinder Bore | 103 mm (4.06 in.) |
| Piston Stroke | 99 mm (3.9 in.) |
| Compression ratio | 16:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Diesel Commonrail |
| Engine aspiration | Turbocharger, Intercooler |
| Valvetrain | OHV |
| Engine oil capacity | 9.5 l (10.04 US qt | 8.36 UK qt) |
| Coolant | 28.5 l (30.12 US qt | 25.08 UK qt) |
| Kerb Weight | 3544 kg (7813.18 lbs.) |
| Max. weight | 5511 kg (12149.68 lbs.) |
| Max load | 1967 kg (4336.49 lbs.) |
| Fuel tank capacity | 136 l (35.93 US gal | 29.92 UK gal) |
| Permitted trailer load with brakes (12%) | 9072 kg (20000.34 lbs.) |
| Length | 6514 mm (256.46 in.) |
| Width including mirrors | 2079 mm (81.85 in.) |
| Height | 2054 mm (80.87 in.) |
| Wheelbase | 4127 mm (162.48 in.) |
| Front track | 1731 mm (68.15 in.) |
| Rear (Back) track | 1736 mm (68.35 in.) |
| Ride height (ground clearance) | 284 mm (11.18 in.) |
| Drivetrain Architecture | All wheel drive (4×4). ICE drives rear wheels, front engaged via clutch. |
| Number of gears and type of gearbox | 10 gears, automatic transmission Allison |
| Front suspension | Independent torsion bar, double wishbone |
| Rear suspension | Rigid axle suspension, Leaf spring |
| Front brakes | Ventilated discs, 355×40 mm |
| Rear brakes | Ventilated discs, 360×34 mm |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Cone worm with recirculation balls |
| Power steering | Hydraulic Steering |
| Tires size | 275/70 R18; 275/65 R20 |
| Wheel rims size | 8J x 18; 8.5J x 20 |
INTRODUCTION
The 2024 Chevrolet Silverado 3500 HD IV Double Cab Long Bed with the 6.6L Duramax diesel represents a significant evolution of Chevrolet’s heavy-duty truck offerings. Built on the T1XX platform, this iteration benefits from a comprehensive facelift, focusing on interior refinement, technology upgrades, and enhanced towing capabilities. The Double Cab configuration provides a balance between passenger space and bed length, making it suitable for both work and family needs. This specific powertrain combination is aimed at customers who demand maximum performance and durability for demanding tasks like hauling large trailers, construction materials, or agricultural equipment.
Powertrain & Engine Architecture
At the heart of this Silverado 3500 HD lies the L5P 6.6-liter Duramax turbocharged diesel V8 engine. This engine is a cornerstone of Chevrolet’s heavy-duty lineup, renowned for its robust construction and impressive torque output. The engine utilizes a direct injection system with a common rail design, delivering fuel at extremely high pressures for optimized combustion. The overhead valve (OHV) valvetrain, while a traditional design, contributes to the engine’s durability and low-end torque characteristics. A single variable geometry turbocharger with an intercooler further enhances performance. The 10-speed Allison automatic transmission is specifically calibrated to handle the engine’s substantial torque, providing smooth and efficient power delivery. This transmission features electronically controlled shifts and a tow/haul mode for optimized performance when towing heavy loads.
Driving Characteristics
The combination of the 470 horsepower and 1322 lb-ft of torque delivered by the Duramax engine and the 10-speed Allison transmission results in a driving experience that prioritizes capability and control. While not designed for outright speed, the Silverado 3500 HD offers ample power for accelerating with a load or maintaining highway speeds. The 10-speed transmission’s closely spaced gear ratios ensure the engine remains within its optimal power band, even when climbing steep grades or towing heavy trailers. Compared to the gasoline-powered Silverado 3500 HD models, the Duramax diesel provides significantly more low-end torque, making it easier to start and maintain momentum with heavy loads. Compared to earlier Duramax engines, the 2024 version benefits from improved refinement and reduced noise, vibration, and harshness (NVH).
Equipment & Trim Levels
The 2024 Silverado 3500 HD Double Cab Long Bed with the Duramax engine is typically offered in higher trim levels such as LT, LTZ, and High Country. Standard features generally include a large infotainment touchscreen with Apple CarPlay and Android Auto compatibility, a rearview camera, and a suite of driver-assistance technologies. Higher trims add features like leather upholstery, heated and ventilated front seats, a premium sound system, and advanced trailering technologies. Optional extras include a power sunroof, a bed liner, and various off-road packages. The Double Cab configuration provides comfortable seating for five passengers, with ample legroom and headroom.
Chassis & Braking
The Silverado 3500 HD utilizes a robust chassis designed to withstand the stresses of heavy-duty use. The front suspension features an independent torsion bar setup with double wishbones, providing a comfortable ride and precise handling. The rear suspension employs a traditional leaf spring design, optimized for load-carrying capacity. Braking duties are handled by ventilated disc brakes on all four wheels, providing ample stopping power even when towing heavy loads. An Anti-lock Braking System (ABS) is standard. The steering system utilizes a hydraulic power steering setup, offering a responsive and predictable feel.
Market Reception & Comparison
The 2024 Silverado 3500 HD with the Duramax diesel has been generally well-received by critics and consumers alike. Reviewers praise its powerful engine, smooth transmission, and refined interior. Compared to competitors like the Ford Super Duty and Ram Heavy Duty, the Silverado 3500 HD offers a competitive combination of capability, comfort, and technology. While fuel economy is not a primary concern for heavy-duty truck buyers, the Duramax diesel generally offers better fuel efficiency than gasoline-powered alternatives, especially when towing. Reliability has been a strong point for the Duramax engine, although maintenance costs can be higher than those of gasoline engines.
Legacy
The Duramax diesel engine has established itself as a benchmark for reliability and durability in the heavy-duty truck segment. The L5P version, found in the 2024 Silverado 3500 HD, continues this legacy. These trucks are expected to hold their value well in the used car market due to their proven capability and robust construction. Properly maintained, the Duramax engine and Allison transmission can provide hundreds of thousands of miles of reliable service, making this a desirable choice for buyers seeking a long-lasting and capable heavy-duty truck.
