The Chevrolet Silverado 3500 HD IV, specifically the 2024 model year facelift featuring a Regular Cab Long Bed configuration with the 6.6-liter Duramax Turbo Diesel V8 engine producing 470 horsepower, represents the pinnacle of capability in Chevrolet’s heavy-duty truck lineup. Introduced as part of the T1XX generation, this variant caters to buyers requiring substantial towing and hauling capacity, particularly in demanding commercial or recreational applications. This configuration, with its dual rear wheels (DRW), is designed for maximizing stability and payload. Production began in 2024, building upon the established reputation of the Silverado HD series for durability and 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) 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 | 7.1 kg/Hp, 141.6 Hp/tonne |
| Weight-to-torque ratio | 2.5 kg/Nm, 398.3 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 | 3319 kg (7317.14 lbs.) |
| Max. weight | 6350 kg (13999.35 lbs.) |
| Max load | 3031 kg (6682.21 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 | 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, 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 diesel and 10-speed Allison automatic transmission is positioned as a heavy-duty workhorse within the Silverado lineup. It slots above the gasoline-powered variants and the 2500 HD models, offering increased towing and payload capacities. The “IV” designation signifies the fourth generation of the Silverado HD series, and the facelift introduced for 2024 brought updated styling, enhanced technology, and refinements to the Duramax engine. The Regular Cab Long Bed configuration is geared towards commercial users and those prioritizing maximum cargo space over passenger comfort.
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 truck strategy, known for its robust construction and impressive torque output. The engine utilizes a cast iron block and aluminum cylinder heads, contributing to its durability. The Duramax employs a high-pressure common rail direct fuel injection system, delivering fuel directly into the cylinders at extremely high pressures for optimized combustion. The engine features an overhead valve (OHV) valvetrain, a design choice favored for its simplicity and reliability. A variable geometry turbocharger and intercooler work in tandem to maximize power and efficiency. The 10-speed Allison automatic transmission is specifically calibrated to handle the immense torque produced by the Duramax engine, providing smooth and efficient power delivery. This transmission features electronically controlled shifts and a wide gear ratio spread for optimal towing performance.
Driving Characteristics
The Silverado 3500 HD with the Duramax and Allison combination delivers a driving experience focused on capability and control. While not designed for sporty handling, the truck provides a surprisingly comfortable ride, especially considering its heavy-duty nature. The 10-speed Allison transmission allows the engine to operate within its optimal power band, providing strong acceleration even when heavily loaded. The gear ratios are well-suited for both highway cruising and low-speed towing. Compared to the gasoline-powered Silverado 3500 HD, the Duramax diesel offers significantly more torque, making it ideal for hauling heavy trailers or payloads. Compared to manual transmission equipped Duramax models, the Allison automatic provides ease of use and reduces driver fatigue, particularly in stop-and-go traffic. However, some drivers may prefer the more direct control offered by a manual transmission.
Equipment & Trim Levels
The Regular Cab Long Bed Silverado 3500 HD typically comes standard with a functional, work-oriented interior. Standard features include vinyl upholstery, a basic infotainment system with a touchscreen display, and essential safety features like ABS and stability control. Higher trim levels, such as the LT and High Country, add features like leather upholstery, heated and ventilated seats, a premium audio system, and advanced driver-assistance technologies. Optional extras for this variant include a trailer brake controller, a gooseneck hitch, and various bed accessories. The interior layout is designed for practicality, with ample storage space and easy-to-use controls.
Chassis & Braking
The Silverado 3500 HD features a robust chassis designed to withstand heavy loads. The front suspension utilizes an independent torsion bar and double wishbone setup, providing a comfortable ride and good handling. The rear suspension employs a traditional leaf spring design, optimized for load-carrying capacity. The DRW configuration significantly enhances stability when towing. Braking duties are handled by ventilated disc brakes on all four wheels, providing ample stopping power. The ABS system helps to prevent wheel lockup during hard braking. The steering system is a hydraulic power steering setup, offering a responsive and predictable feel.
Market Reception & Comparison
The 2024 Silverado 3500 HD with the Duramax diesel and Allison automatic has been well-received by critics and consumers alike. It consistently ranks highly in comparisons with its rivals, the Ford Super Duty and Ram Heavy Duty trucks. The Duramax engine is praised for its power, efficiency, and reliability. The Allison transmission is also lauded for its smooth shifting and durability. Compared to the gasoline-powered Silverado 3500 HD, the diesel variant offers superior fuel economy when towing heavy loads. However, the diesel engine comes with a higher initial cost and potentially higher maintenance expenses. The DRW configuration, while offering increased stability, can make the truck more challenging to maneuver in tight spaces.
Legacy
The L5P Duramax engine and Allison 10-speed automatic transmission have proven to be a highly reliable powertrain combination. The Duramax engine, in particular, has a long-standing reputation for durability and longevity. While diesel engines generally require more maintenance than gasoline engines, the Duramax is known for its ability to withstand high mileage with proper care. In the used car market, Silverado 3500 HD models equipped with this powertrain combination command a premium price due to their proven capability and reliability. This configuration remains a popular choice for buyers seeking a heavy-duty truck that can handle demanding tasks for years to come.
