The Chevrolet Silverado 3500 HD IV, specifically the 2024 Crew Cab Long Bed configuration powered by the 6.6-liter Duramax Turbo-Diesel V8 engine producing 470 horsepower, represents the pinnacle of capability within Chevrolet’s heavy-duty truck lineup. Introduced as part of the refreshed T1XX platform in 2024, this variant caters to buyers requiring substantial towing and hauling capacity without sacrificing a degree of interior comfort. Positioned as a premium offering within the 3500 HD range, it slots above the gasoline-powered options and serves as a robust alternative to competitors like the Ford Super Duty and Ram 3500.
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) 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 | 7.3 kg/Hp, 136.4 Hp/tonne |
| Weight-to-torque ratio | 2.6 kg/Nm, 383.6 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 | 3446 kg (7597.13 lbs.) |
| Max. weight | 5398 kg (11900.55 lbs.) |
| Max load | 1952 kg (4303.42 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 | 2079 mm (81.85 in.) |
| Height | 2049 mm (80.67 in.) |
| Wheelbase | 4369 mm (172.01 in.) |
| Front track | 1731 mm (68.15 in.) |
| Rear (Back) track | 1736 mm (68.35 in.) |
| Ride height (ground clearance) | 283 mm (11.14 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, 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 Crew Cab Long Bed with the 6.6L Duramax diesel and Allison automatic transmission is a heavy-duty pickup truck designed for demanding tasks. Built on the T1XX platform, this iteration represents a significant refresh of the Silverado HD line, focusing on increased capability, refined interior appointments, and updated technology. The Crew Cab configuration provides ample passenger space, while the Long Bed offers a substantial cargo area. This particular variant is aimed at customers who frequently tow large trailers – such as fifth-wheels, boats, or construction equipment – and require a powerful and reliable workhorse.
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 offerings, 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 prioritizing durability and low-end torque. A variable geometry turbocharger and intercooler work in concert 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 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 both performance and driver comfort.
Driving Characteristics
The combination of the Duramax diesel and Allison transmission results in a driving experience focused on effortless power and control. The 10-speed Allison transmission’s closely spaced gear ratios keep the engine operating within its optimal power band, even when hauling heavy loads. Acceleration, while not sporty, is surprisingly brisk for a vehicle of this size and weight. The truck feels stable and planted, even when fully loaded. Compared to gasoline-powered Silverado 3500 HD models, the diesel offers significantly more low-end torque, making it ideal for towing steep grades or navigating challenging terrain. Compared to earlier Duramax engines, the L5P benefits from improved refinement and reduced noise, vibration, and harshness (NVH). While the manual transmission options (available on other Silverado trims) offer more driver engagement, the Allison automatic provides a level of convenience and ease of use that is highly valued by many truck owners.
Equipment & Trim Levels
The 2024 Silverado 3500 HD IV Crew Cab Long Bed 6.6 Duramax typically comes standard with a comprehensive suite of features. These include a large infotainment touchscreen with Apple CarPlay and Android Auto compatibility, a rearview camera, and a suite of advanced driver-assistance systems (ADAS) such as automatic emergency braking and lane departure warning. Interior upholstery is typically cloth or leatherette, with higher trims offering genuine leather options. The Crew Cab configuration provides generous legroom for all passengers. Optional extras include a premium audio system, heated and ventilated front seats, a power-adjustable steering column, and a bed liner. The Long Bed provides a substantial cargo capacity, and options like tie-down points and cargo management systems further enhance its utility.
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 at all four corners, 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 is a hydraulic power-assisted cone worm setup, providing a responsive and predictable 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 comfortable ride. Fuel economy, while not a primary concern for heavy-duty truck buyers, is respectable for a vehicle of this size and capability. Compared to the gasoline-powered Silverado 3500 HD models, the Duramax diesel offers significantly better fuel economy when towing heavy loads. Reliability has been a strong point for the Duramax engine, although maintenance costs can be higher than those of gasoline engines. Compared to competitors like the Ford Super Duty and Ram 3500, the Silverado 3500 HD offers a compelling combination of power, capability, and value.
Legacy
The Duramax diesel engine has established a strong reputation for longevity and reliability. The L5P variant, in particular, has proven to be a durable and dependable powertrain. On the used car market, Silverado 3500 HD models equipped with the Duramax diesel and Allison transmission command a premium price due to their proven track record and high demand. With proper maintenance, these trucks are capable of accumulating hundreds of thousands of miles, making them a sound investment for buyers who require a capable and reliable heavy-duty pickup.
