The Chevrolet Silverado 3500 HD IV, specifically the 2024 Double Cab Long Bed configuration powered by the 6.6-liter Duramax Turbo-Diesel V8 engine producing 470 horsepower, represents the latest iteration of Chevrolet’s heavy-duty pickup truck lineage. Introduced as part of the T1XX platform’s mid-cycle refresh in 2024, this variant caters to buyers requiring substantial towing and hauling capabilities without sacrificing a degree of interior comfort and technology. It occupies a prominent position within the Silverado 3500 HD lineup, positioned as a robust, diesel-powered option for demanding tasks, falling between the gasoline-powered variants and the more specialized work truck trims.
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) 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 | 7.2 kg/Hp, 138.1 Hp/tonne |
| Weight-to-torque ratio | 2.6 kg/Nm, 388.4 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 | 3404 kg (7504.54 lbs.) |
| Max. weight | 5375 kg (11849.85 lbs.) |
| Max load | 1971 kg (4345.31 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 | Rear wheel drive. Internal Combustion engine (ICE) drives the rear wheels. |
| Drive wheel | Rear wheel drive |
| 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 Double Cab Long Bed with the 6.6L Duramax diesel and Allison automatic transmission is a heavy-duty pickup designed for demanding workloads. As part of the fourth-generation Silverado HD (T1XX platform), the 2024 model year represents a significant refresh, 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 use. This particular variant is aimed at customers who prioritize diesel power, substantial towing capacity, and a comfortable driving experience.
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, known for its robust construction and impressive torque output. The L5P utilizes a cast iron block, aluminum cylinder heads, and a forged steel crankshaft. It employs a diesel commonrail fuel injection system, delivering fuel at extremely high pressures for efficient combustion. The engine features an overhead valve (OHV) valvetrain, a design choice favored for its durability and low-end torque characteristics. A variable geometry turbocharger and intercooler work in tandem to optimize power and efficiency across the engine’s operating range. The engine produces 470 horsepower at 2800 rpm and a massive 1322 Nm (975.06 lb-ft) of torque at 1600 rpm. This power is channeled through a heavy-duty 10-speed Allison automatic transmission, specifically tuned for the demands of heavy towing and hauling. The Allison transmission provides smooth and precise shifting, contributing to a refined driving experience even under heavy load.
Driving Characteristics
The combination of the Duramax diesel and the 10-speed Allison transmission results in a driving experience that prioritizes effortless power and control. The substantial torque available from low engine speeds allows for confident acceleration, even when towing heavy trailers. The 10-speed transmission’s closely spaced gear ratios keep the engine operating within its optimal power band, maximizing efficiency and responsiveness. Compared to gasoline-powered Silverado 3500 HD models, the diesel variant offers significantly more torque, making it better suited for demanding tasks. While the diesel engine is noticeably louder than its gasoline counterparts, the Allison transmission minimizes harshness during shifts. The Double Cab Long Bed configuration provides a comfortable ride, although the suspension is tuned for load-carrying capacity rather than outright comfort. The steering feels precise and well-weighted, providing good feedback to the driver.
Equipment & Trim Levels
The 2024 Silverado 3500 HD Double Cab Long Bed 6.6 Duramax typically comes standard with a comprehensive suite of features. These include air conditioning, power windows and locks, a touchscreen infotainment system with Apple CarPlay and Android Auto compatibility, and a rearview camera. Higher trim levels add features such as leather upholstery, heated and ventilated front seats, a premium sound system, and advanced safety technologies like adaptive cruise control and lane departure warning. Optional extras include a power sunroof, a bed liner, and various towing packages. The interior design emphasizes functionality and durability, with comfortable seating and intuitive controls.
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 good 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. The front brakes measure 355×40 mm, while the rear brakes are 360×34 mm. An Anti-lock Braking System (ABS) is standard, enhancing safety and control during emergency braking situations. The steering system utilizes a cone worm with recirculation balls, providing precise and responsive steering 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 impressive towing capabilities. Compared to other heavy-duty pickups in its class, such as the Ford Super Duty and Ram 3500, the Silverado 3500 HD offers a competitive combination of performance, features, and value. The Duramax diesel engine is often cited as a key advantage, offering excellent fuel economy for a vehicle of its size and capability. However, some critics note that the interior design, while improved in the 2024 model, still lags behind some of its competitors in terms of luxury and refinement.
Legacy
The Duramax diesel engine has established a strong reputation for reliability and longevity. The L5P engine, in particular, has proven to be a durable and dependable powerplant, capable of accumulating hundreds of thousands of miles with proper maintenance. In the used car market, Silverado 3500 HD models equipped with the Duramax diesel command a premium price due to their proven performance and durability. The Allison automatic transmission is also highly regarded for its reliability and smooth operation. As a result, these trucks remain popular choices for buyers seeking a capable and long-lasting heavy-duty pickup.
