The Chevrolet Silverado 3500 HD IV, specifically the 2024 model year iteration with the 6.6L Duramax Turbo Diesel V8 engine producing 470 horsepower and paired with a 10-speed Allison automatic transmission, represents the pinnacle of capability within Chevrolet’s heavy-duty truck lineup. Introduced as part of the T1XX platform’s mid-cycle refresh, this configuration is targeted towards buyers requiring substantial towing and hauling capacity, particularly in demanding commercial or recreational applications. The “DRW” designation indicates a Dual Rear Wheel configuration, further enhancing stability and payload. This variant is positioned as a premium offering, sitting at the top of the Silverado 3500 HD range in terms of powertrain performance.
Technical Specifications
| Brand | Chevrolet |
| Model | Silverado 3500 HD |
| Generation | Silverado 3500 HD IV (T1XX, facelift 2024) Regular Cab Long Bed |
| Type (Engine) | 6.6 Duramax TD V8 (470 Hp) 4WD DRW Automatic |
| Start of production | 2024 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Pick-up |
| Seats | 2 |
| Doors | 2 |
| Fuel Type | Diesel |
| Weight-to-power ratio | 7.4 kg/Hp, 135.3 Hp/tonne |
| Weight-to-torque ratio | 2.6 kg/Nm, 380.4 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 | 3475 kg (7661.06 lbs.) |
| Max. weight | 6350 kg (13999.35 lbs.) |
| Max load | 2875 kg (6338.29 lbs.) |
| Fuel tank capacity | 106 l (28 US gal | 23.32 UK gal) |
| Permitted trailer load with brakes (12%) | 9072 kg (20000.34 lbs.) |
| Length | 5982 mm (235.51 in.) |
| Width including mirrors | 2457 mm (96.73 in.) |
| Height | 2038 mm (80.24 in.) |
| Wheelbase | 3595 mm (141.54 in.) |
| Front track | 1731 mm (68.15 in.) |
| Rear (Back) track | 1905 mm (75 in.) |
| Ride height (ground clearance) | 266 mm (10.47 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, 355×40 mm |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Cone worm with recirculation balls |
| Power steering | Hydraulic Steering |
| Tires size | 235/80 R17; 235/80 R18 |
| Wheel rims size | 6.5J x 17 |
INTRODUCTION
The 2024 Chevrolet Silverado 3500 HD IV with the 6.6L Duramax engine and 10-speed Allison transmission is a heavy-duty pickup truck designed for demanding tasks. It builds upon the foundation of the T1XX platform, representing a significant update to the Silverado HD line. This generation focuses on increased capability, refined interior appointments, and enhanced technology. The Regular Cab, Long Bed configuration, coupled with the Dual Rear Wheel setup, caters to a specific segment of the market – those prioritizing maximum towing capacity and payload over passenger space and maneuverability. This truck is primarily sold in North America, where the demand for heavy-duty trucks remains strong.
Powertrain & Engine Architecture
At the heart of this Silverado 3500 HD lies the L5P 6.6-liter Duramax turbocharged diesel engine. This engine is a cornerstone of Chevrolet’s heavy-duty offerings, known for its robust construction and impressive torque output. The L5P utilizes a cast iron block and aluminum cylinder heads, contributing to its durability. The engine employs a high-pressure common rail direct fuel injection system, delivering fuel directly into the cylinders at extremely high pressures for optimized combustion. The valvetrain utilizes an overhead valve (OHV) configuration, a design choice favored for its simplicity and reliability. A variable geometry turbocharger, coupled with an intercooler, maximizes power and efficiency across a wide range of operating conditions. The 10-speed Allison automatic transmission is specifically calibrated to handle the immense torque produced by the Duramax engine. This transmission features electronically controlled shifts and a wide gear ratio spread, optimizing both towing performance and fuel economy.
Driving Characteristics
The 470 horsepower and 1322 lb-ft of torque delivered by this powertrain combination translate into exceptional towing and hauling capabilities. The 10-speed Allison transmission allows the engine to remain within its optimal power band, even when carrying heavy loads or navigating steep inclines. While not designed for outright speed, the Silverado 3500 HD provides ample power for highway cruising and confident acceleration. Compared to lower-output gasoline engine options in the Silverado 3500 HD lineup, this Duramax variant offers significantly more torque, making it the preferred choice for those regularly towing large trailers or hauling heavy payloads. Compared to older Duramax engines, the 2024 L5P benefits from improved refinement and reduced noise, vibration, and harshness (NVH). The Dual Rear Wheel configuration enhances stability, particularly when towing, but also results in a wider turning radius.
Equipment & Trim Levels
The 2024 Silverado 3500 HD IV in this configuration typically comes standard with a robust set of features, reflecting its premium positioning. Standard equipment includes air conditioning, power windows and locks, a basic infotainment system with a touchscreen display, and a rearview camera. Higher trim levels, such as High Country, add luxury features like leather upholstery, heated and ventilated front seats, a premium audio system, and advanced safety technologies. Optional extras include a gooseneck/fifth-wheel towing package, a bed liner, and various appearance packages. The interior design is functional and durable, prioritizing practicality over lavishness, though the 2024 refresh brought improvements in material quality and design.
Chassis & Braking
The Silverado 3500 HD utilizes a fully boxed frame constructed from high-strength steel, providing a solid foundation for its heavy-duty capabilities. The front suspension features an independent torsion bar setup with double wishbone components, while the rear suspension employs a traditional leaf spring design. This configuration is optimized for load-carrying capacity and stability. Braking duties are handled by ventilated disc brakes on all four wheels, providing ample stopping power even when heavily loaded. An Anti-lock Braking System (ABS) is standard. The DRW configuration contributes to increased braking performance and stability under heavy loads. Steering is accomplished via a hydraulic power steering system, offering a direct and responsive feel.
Market Reception & Comparison
The 2024 Silverado 3500 HD with the Duramax engine has generally received positive reviews from automotive critics. Its impressive towing capacity, robust powertrain, and refined ride quality have been praised. Compared to competitors like the Ford Super Duty and Ram Heavy Duty, the Silverado 3500 HD offers a competitive combination of performance, features, and value. Fuel economy, while improved with the 10-speed transmission, remains a consideration for owners, as diesel fuel is typically more expensive than gasoline. Reliability has been a strong point for the Duramax engine, though regular maintenance is crucial to ensure long-term durability.
Legacy
The Duramax engine has established a strong reputation for reliability and longevity. The L5P variant, in particular, has proven to be a durable and capable powerplant. In the used car market, Silverado 3500 HD models equipped with the Duramax engine and Allison transmission command a premium price due to their proven track record and high demand. Properly maintained examples of this powertrain are expected to provide many years of reliable service, making them a popular choice for both commercial and personal use. The 2024 model year represents the latest evolution of this proven combination, further solidifying its position as a leader in the heavy-duty truck segment.
