The GMC Sierra 3500HD IV, produced from 2015 to 2019, represents the fourth generation of GMC’s heavy-duty pickup truck line, based on the GMTK2XX platform. This particular variant, the Regular Cab Long Box configuration equipped with the 6.0-liter V8 engine and a six-speed automatic transmission, served as a work-focused offering within the Sierra 3500HD range. Positioned as a robust and capable truck for demanding tasks, it catered to buyers prioritizing towing and hauling capacity over luxury or passenger space. The “DRW” designation indicates a Dual Rear Wheel configuration, further enhancing its capabilities.
Technical Specifications
| Brand | GMC |
| Model | Sierra 3500HD |
| Generation | Sierra 3500HD IV (GMTK2XX) Regular Cab Long Box |
| Type (Engine) | 6.0 V8 (360 Hp) DRW Automatic |
| Start of production | 2015 |
| End of production | 2019 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Pick-up |
| Seats | 2 |
| Doors | 2 |
| Fuel Type | Petrol (Gasoline) |
| Weight-to-power ratio | 8 kg/Hp, 125.6 Hp/tonne |
| Weight-to-torque ratio | 5.6 kg/Nm, 179.6 Nm/tonne |
| Power | 360 Hp @ 5400 rpm |
| Power per litre | 60.3 Hp/l |
| Torque | 515 Nm @ 4200 rpm (379.84 lb.-ft. @ 4200 rpm) |
| Maximum engine speed | 6000 rpm |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | Vortec L96 |
| Engine displacement | 5967 cm3 (364.13 cu. in.) |
| Number of cylinders | 8 |
| Engine configuration | V-engine |
| Cylinder Bore | 101.6 mm (4 in.) |
| Piston Stroke | 92 mm (3.62 in.) |
| Compression ratio | 9.6:1 |
| Number of valves per cylinder | 2 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Naturally aspirated engine |
| Valvetrain | OHV, VVT |
| Engine oil capacity | 5.7 l (6.02 US qt | 5.02 UK qt) |
| Coolant | 16.1 l (17.01 US qt | 14.17 UK qt) |
| Kerb Weight | 2867 kg (6320.65 lbs.) |
| Max. weight | 6123 kg (13498.9 lbs.) |
| Max load | 3256 kg (7178.25 lbs.) |
| Trunk (boot) space – maximum | 2162 l (76.35 cu. ft.) |
| Fuel tank capacity | 136 l (35.93 US gal | 29.92 UK gal) |
| Permitted trailer load with brakes (12%) | 6486 kg (14299.18 lbs.) |
| Length | 5699 mm (224.37 in.) |
| Width including mirrors | 2438 mm (95.98 in.) |
| Height | 1965 mm (77.36 in.) |
| Wheelbase | 3393 mm (133.58 in.) |
| Front track | 1748 mm (68.82 in.) |
| Rear (Back) track | 1906 mm (75.04 in.) |
| Ride height (ground clearance) | 204 mm (8.03 in.) |
| Minimum turning circle (turning diameter) | 14 m (45.93 ft.) |
| 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 | 6 gears, automatic transmission Hydra-Matic |
| Front suspension | Coil spring, Double wishbone, Transverse stabilizer |
| 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 |
| Tires size | 235/80 R17; 265/70 R18 |
| Wheel rims size | 7.5J x 17; 8J x 18 |
INTRODUCTION
The 2015-2019 GMC Sierra 3500HD with the 6.0L V8 and automatic transmission was a mainstay of GMC’s heavy-duty lineup. Built on the GMTK2XX platform, this generation represented a significant step forward in capability and refinement compared to its predecessors. The Regular Cab, Long Box configuration, coupled with the Dual Rear Wheel setup, specifically targeted commercial users and individuals requiring maximum towing and payload capacity. This truck was designed for serious work, prioritizing functionality and durability over outright speed or luxury.
Powertrain & Engine Architecture
At the heart of this Sierra 3500HD lies the Vortec L96 6.0-liter V8 engine. This engine is a member of GM’s small-block V8 family, known for its reliability and robust construction. The L96 features a cast iron block and aluminum cylinder heads, utilizing a multi-port fuel injection system for precise fuel delivery. The engine produces 360 horsepower at 5400 rpm and 380 lb-ft of torque at 4200 rpm. Overhead valve (OHV) valvetrain with variable valve timing (VVT) contributes to a balance of power and efficiency. The engine’s longitudinal mounting and rear-wheel-drive configuration are typical for heavy-duty trucks. The six-speed Hydra-Matic automatic transmission, a robust unit designed to handle the engine’s torque output, provides smooth and reliable shifting. This transmission was chosen for its durability and ability to manage heavy loads effectively.
Driving Characteristics
The 6.0L V8 and automatic transmission combination in the Sierra 3500HD delivers a driving experience focused on capability rather than sportiness. Acceleration is adequate for a truck of this size and weight, but the emphasis is on providing ample low-end torque for towing and hauling. The automatic transmission is programmed for smooth shifts and efficient operation, prioritizing stability when carrying heavy loads. Compared to the available Duramax diesel engine, the 6.0L V8 offers less torque but a lower initial cost and potentially simpler maintenance. Compared to a manual transmission equipped version, the automatic provides ease of use, especially in stop-and-go traffic or when maneuvering in tight spaces, but may sacrifice some driver control and fuel efficiency.
Equipment & Trim Levels
The Regular Cab configuration of the Sierra 3500HD was typically offered in work truck (WT) and SLE trims. The WT trim was the base model, focusing on essential features for commercial use. Standard equipment included air conditioning, a basic audio system, and vinyl upholstery. The SLE trim added more comfort and convenience features, such as cloth upholstery, power windows and locks, and an upgraded audio system. Optional extras included a trailer brake controller, a navigation system, and various towing packages. The interior was functional and durable, designed to withstand the rigors of daily work use.
Chassis & Braking
The Sierra 3500HD’s chassis is built for heavy-duty applications. The front suspension utilizes coil springs and a double wishbone design, while the rear suspension employs a traditional leaf spring setup. This configuration provides a comfortable ride while maintaining excellent load-carrying capacity. The DRW configuration significantly increases stability and payload 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, enhancing safety and control. The steering system utilizes a cone worm with recirculation balls, offering precise and responsive steering.
Market Reception & Comparison
The GMC Sierra 3500HD with the 6.0L V8 and automatic transmission was generally well-received by critics and buyers alike. It was praised for its robust construction, ample towing capacity, and relatively affordable price point compared to diesel-powered models. Fuel economy, however, was a common criticism, as the 6.0L V8 is less fuel-efficient than the Duramax diesel. Reliability was generally good, with the Vortec L96 engine proving to be a durable and dependable powerplant. Compared to the Ford Super Duty and Ram 3500, the Sierra 3500HD offered a competitive combination of capability, comfort, and value.
Legacy
The 2015-2019 GMC Sierra 3500HD with the 6.0L V8 and automatic transmission continues to be a popular choice in the used truck market. The Vortec L96 engine is known for its longevity and relatively simple maintenance requirements. While not as fuel-efficient as newer trucks, it remains a capable and reliable workhorse. These trucks are often sought after by individuals and businesses needing a heavy-duty pickup for towing, hauling, and general work purposes. The DRW configuration adds to its appeal for those requiring maximum payload and towing capacity, ensuring its continued relevance in the used vehicle landscape.
