The Chevrolet Silverado 2500 HD IV, specifically the 2024 facelift model in its Regular Cab Long Bed configuration with the 6.6L Duramax Turbo-Diesel V8 engine producing 470 horsepower, represents a significant offering in the heavy-duty pickup truck segment. Introduced for the 2024 model year as part of the fourth-generation (T1XX platform) Silverado HD lineup, this variant caters to buyers needing substantial towing and hauling capacity combined with the refinement of a diesel powertrain. It occupies a position within the Silverado 2500 HD range as a work-focused, yet capable, option, bridging the gap between more basic work truck trims and the fully-loaded luxury configurations.
Technical Specifications
| Brand | Chevrolet |
| Model | Silverado 2500 HD |
| Generation | Silverado 2500 HD IV (T1XX, facelift 2024) Regular Cab Long Bed |
| Type (Engine) | 6.6 Duramax TD V8 (470 Hp) 4WD Automatic |
| Start of production | 2023 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Pick-up |
| Seats | 2 |
| Doors | 2 |
| Fuel Type | Diesel |
| Weight-to-power ratio | 6.8 kg/Hp, 147.8 Hp/tonne |
| Weight-to-torque ratio | 2.4 kg/Nm, 415.7 Nm/tonne |
| Power | 470 Hp @ 2800 rpm |
| Torque | 1322 Nm @ 1600 rpm (975.06 lb.-ft. @ 1600 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | L5P |
| 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 capacity | 28.5 l (30.12 US qt | 25.08 UK qt) |
| Kerb Weight | 3180 kg (7010.7 lbs) |
| Max. weight | 4944 kg (10899.65 lbs) |
| Max load | 1764 kg (3888.95 lbs) |
| Fuel tank capacity | 106 l (28 US gal | 23.32 UK gal) |
| Permitted trailer load with brakes (12%) | 6577 kg (14499.8 lbs) |
| Length | 5982 mm (235.51 in) |
| Width including mirrors | 2076 mm (81.73 in) |
| Height | 2030 mm (79.92 in) |
| Wheelbase | 3595 mm (141.54 in) |
| Front track | 1731 mm (68.15 in) |
| Rear track | 1736 mm (68.35 in) |
| Ride height (ground clearance) | 259 mm (10.2 in) |
| Drivetrain Architecture | All wheel drive (4×4). ICE drives rear wheels, front wheels 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, 360×34 mm |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Cone worm with recirculation balls |
| Power steering | Hydraulic Steering |
| Tires size | 245/75 R17; 265/70 R17; 275/70 R18; 265/65 R20 |
| Wheel rims size | 7.5J x 17; 8J x 18; 8.5J x 20 |
Introduction
The 2024 Chevrolet Silverado 2500 HD Regular Cab Long Bed with the 6.6L Duramax diesel and 10-speed Allison automatic transmission is a heavy-duty pickup designed for demanding tasks. Built on the T1XX platform, this iteration represents a significant refresh of the Silverado HD line, focusing on increased capability, improved technology, and a more refined interior. The Regular Cab configuration, paired with the long bed, prioritizes practicality and cargo space, making it ideal for commercial use or owners who frequently haul large loads. This specific combination aims to deliver a balance between diesel power, towing capacity, and a relatively accessible price point within the Silverado 2500 HD range.
Powertrain & Engine Architecture
At the heart of this Silverado 2500 HD lies the 6.6-liter Duramax L5P turbo-diesel V8 engine. This engine is a cornerstone of GM’s heavy-duty truck strategy, known for its robust construction and high torque output. The L5P utilizes a cast iron block, aluminum cylinder heads, and a forged steel crankshaft. It employs a high-pressure common rail direct fuel injection system, delivering fuel 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 favored for its durability and low-end torque characteristics. The 10-speed Allison automatic transmission is specifically calibrated to handle the engine’s substantial torque, providing smooth and efficient power delivery. This transmission features electronically controlled shifts and a wide gear ratio spread, optimizing performance for both towing and everyday driving.
Driving Characteristics
The Silverado 2500 HD 6.6L Duramax with the 10-speed Allison delivers a driving experience focused on capability and control. While not as quick as gasoline-powered counterparts, the immense 1322 Nm (975 lb-ft) of torque provides effortless acceleration, especially when towing. The 10-speed Allison transmission is a key contributor to the driving experience, offering close gear ratios that keep the engine in its optimal power band. Compared to the 6.6L gasoline engine option, the Duramax provides significantly more low-end grunt, making it ideal for hauling heavy loads or navigating challenging terrain. Compared to manual transmission equipped Duramax models, the Allison automatic offers convenience and ease of use, particularly in stop-and-go traffic or for drivers less familiar with manual transmissions. The ride quality, while firm due to the heavy-duty suspension, is surprisingly compliant, especially when unladen.
Equipment & Trim Levels
The 2024 Silverado 2500 HD Regular Cab Long Bed 6.6 Duramax typically comes standard with features geared towards work and utility. These include a basic infotainment system with a touchscreen display, Bluetooth connectivity, and USB ports. Standard safety features include ABS, stability control, and multiple airbags. Interior upholstery is typically vinyl or cloth, reflecting the truck’s work-oriented focus. Optional extras, depending on the specific trim level (Work Truck, LT, etc.), can include features like a larger touchscreen display, navigation, premium audio systems, leather upholstery, heated and ventilated seats, and advanced driver-assistance systems such as adaptive cruise control and lane departure warning.
Chassis & Braking
The Silverado 2500 HD utilizes a robust chassis designed to withstand heavy loads and demanding conditions. The front suspension features an independent torsion bar setup with double wishbones, providing a comfortable ride and stable 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. The front brakes measure 355x40mm, while the rear brakes are 360x34mm. An Anti-lock Braking System (ABS) is standard, enhancing safety and control during emergency braking situations. The steering system utilizes a hydraulic power steering setup, providing responsive and precise steering feel.
Market Reception & Comparison
The Silverado 2500 HD 6.6L Duramax has consistently received positive reviews for its towing capacity, engine performance, and overall durability. Critics have praised the Allison transmission for its smooth shifting and ability to handle the engine’s torque. Compared to competitors like the Ford Super Duty and Ram Heavy Duty, the Silverado 2500 HD often stands out for its strong diesel engine and competitive pricing. Fuel economy, while typical for a heavy-duty diesel, is a consideration, with EPA estimates varying depending on configuration and driving conditions. Reliability has generally been good, although diesel engines can be more complex and potentially more expensive to maintain than gasoline engines.
Legacy
The L5P Duramax engine and Allison 10-speed transmission combination has proven to be a reliable and durable powertrain. In the used car market, Silverado 2500 HD models equipped with this powertrain hold their value well, due to their reputation for longevity and capability. Proper maintenance, including regular oil changes and fuel filter replacements, is crucial for ensuring the long-term health of the Duramax engine. These trucks continue to be popular choices for owners who require a heavy-duty pickup capable of handling demanding tasks, and well-maintained examples are expected to remain on the road for many years to come.
