The Chevrolet Silverado 3500 HD IV, specifically the Crew Cab Long Bed configuration with the 6.6-liter Duramax Turbo Diesel V8 engine producing 470 horsepower, represents the pinnacle of capability within the fourth generation (T1XX) Silverado HD lineup, introduced with a significant facelift in 2024. This variant is positioned as a heavy-duty work truck and towing specialist, catering to owners with substantial hauling and payload requirements. It builds upon the established Silverado HD legacy, offering increased refinement and technology while maintaining its core strength. The “DRW” designation indicates a Dual Rear Wheel configuration, further enhancing stability and load capacity.
Technical Specifications
| Brand | Chevrolet |
| Model | Silverado 3500 HD |
| Generation | Silverado 3500 HD IV (T1XX, facelift 2024) Crew Cab Long Bed |
| Type (Engine) | 6.6 Duramax TD V8 (470 Hp) DRW 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 | 7.7 kg/Hp, 130.5 Hp/tonne |
| Weight-to-torque ratio | 2.7 kg/Nm, 367.1 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 | 3601 kg (7938.85 lbs.) |
| Max. weight | 6350 kg (13999.35 lbs.) |
| Max load | 2749 kg (6060.51 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 | 6759 mm (266.1 in.) |
| Width including mirrors | 2457 mm (96.73 in.) |
| Height | 2049 mm (80.67 in.) |
| Wheelbase | 4369 mm (172.01 in.) |
| Front track | 1731 mm (68.15 in.) |
| Rear (Back) track | 1905 mm (75 in.) |
| Ride height (ground clearance) | 264 mm (10.39 in.) |
| Drivetrain Architecture | The Internal combustion engine (ICE) drives the rear wheels of the vehicle. |
| 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, 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; 8J x 18 |
Introduction
The 2024 Chevrolet Silverado 3500 HD IV Crew Cab Long Bed with the 6.6L Duramax diesel and Allison automatic transmission is a heavy-duty pickup truck designed for demanding tasks. It represents a significant update to the Silverado HD line, building on the T1XX platform. This generation focuses on improving interior quality, technology integration, and overall refinement while retaining the robust capabilities expected of a 3500-series truck. The DRW (Dual Rear Wheel) configuration is specifically geared towards maximizing towing capacity and payload, making it a popular choice for commercial users, those who frequently tow large trailers (like fifth-wheels or gooseneck trailers), and individuals needing substantial hauling capabilities.
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 GM’s heavy-duty truck strategy, known for its durability and substantial torque output. The L5P utilizes a cast iron block, aluminum cylinder heads, and a robust rotating assembly designed to withstand the stresses of heavy hauling. 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 turbocharger, coupled with an intercooler, provides increased air density for enhanced power and efficiency. The engine features an overhead valve (OHV) valvetrain, a design choice prioritizing low-end torque and reliability. Paired with the engine is the Allison 10-speed automatic transmission, a heavy-duty unit specifically engineered to handle the immense torque produced by the Duramax diesel. This transmission features electronically controlled shifts and a lock-up torque converter for improved fuel economy and responsiveness.
Driving Characteristics
The combination of the 470 horsepower and 1322 lb-ft of torque delivered by the Duramax engine and managed by the Allison 10-speed automatic results in a driving experience focused on effortless towing and hauling. While not designed for sporty acceleration, the Silverado 3500 HD provides ample power for merging onto highways and maintaining speed even when heavily loaded. The 10-speed transmission allows for tightly spaced gear ratios, keeping the engine within its optimal power band. Compared to gasoline-powered Silverado HD models, the diesel offers significantly more low-end torque, making it easier to start and maintain momentum with heavy loads. Compared to earlier Duramax engines, the 2024 L5P benefits from improved refinement and reduced noise, vibration, and harshness (NVH). The DRW configuration contributes to a more stable and controlled ride, especially when towing, but it also results in a wider overall vehicle width.
Equipment & Trim Levels
The Silverado 3500 HD IV Crew Cab Long Bed with the Duramax engine typically comes well-equipped, even in base trims. Standard features often include a large infotainment touchscreen with Apple CarPlay and Android Auto compatibility, a rearview camera, and a suite of driver-assistance technologies like automatic emergency braking. Higher trim levels, such as High Country, add premium features like leather upholstery, heated and ventilated seats, a premium sound system, and advanced trailering technologies. The Crew Cab configuration provides ample passenger space, while the Long Bed offers a generous cargo area. Optional extras include a power sunroof, a bed liner, and various towing packages tailored to specific trailer types.
Chassis & Braking
The Silverado 3500 HD utilizes a fully boxed frame constructed from high-strength steel, providing a solid foundation for heavy-duty applications. The front suspension features an independent torsion bar setup with double wishbone components, while the rear suspension employs a traditional leaf spring design. The DRW configuration utilizes a wider rear axle and dual rear wheels for increased stability and load capacity. 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 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. It is consistently praised for its robust towing capabilities, comfortable ride (especially with the DRW configuration), and improved interior quality. Compared to its rivals, such as the Ford Super Duty and Ram HD, the Silverado 3500 HD often stands out for its strong diesel engine and refined driving experience. Fuel economy, while not a primary concern for heavy-duty truck buyers, is competitive within its class. Reliability has been a strong point for the Duramax engine, although regular maintenance is crucial for long-term durability.
Legacy
The L5P Duramax engine has established itself as a highly reliable and capable powerplant in the heavy-duty truck segment. The combination of the Duramax diesel and Allison automatic transmission is known for its longevity and ability to withstand demanding use. On the used car market, Silverado 3500 HD models equipped with this powertrain hold their value well, reflecting their reputation for durability and capability. Properly maintained examples of this powertrain are expected to provide many years of reliable service, making them a popular choice for buyers seeking a long-lasting and capable heavy-duty truck.
