The GMC Sierra 3500HD IV (GMTK2XX) Crew Cab Standard Box, equipped with the 6.0-liter V8 engine and 4WD, represents a significant iteration in GMC’s heavy-duty truck lineage. Produced from 2015 to 2019, this model year fell within the fourth generation of the Sierra 3500HD, known internally as the GMTK2XX platform. This generation focused on enhanced capability, refinement, and technology compared to its predecessors, aiming to solidify GMC’s position as a premium truck brand. The combination of the 6.0L V8 and automatic transmission was a popular configuration, offering a balance between power, towing capacity, and everyday usability for both work and personal use.
Technical Specifications
| Brand | GMC |
| Model | Sierra 3500HD |
| Generation | Sierra 3500HD IV (GMTK2XX) Crew Cab Standard Box |
| Type (Engine) | 6.0 V8 (360 Hp) 4WD SRW Automatic |
| Start of production | 2015 |
| End of production | 2019 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Pick-up |
| Seats | 5 |
| Doors | 4 |
| Fuel Type | Petrol (Gasoline) |
| Weight-to-power ratio | 8.5 kg/Hp, 118.2 Hp/tonne |
| Weight-to-torque ratio | 5.9 kg/Nm, 169.1 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 | 3045 kg, 6713.08 lbs |
| Max. weight | 4899 kg, 10800.45 lbs |
| Max load | 1854 kg, 4087.37 lbs |
| Trunk (boot) space – maximum | 1728 l, 61.02 cu. ft |
| Fuel tank capacity | 136 l, 35.93 US gal | 29.92 UK gal |
| Permitted trailer load with brakes (12%) | 5897 kg, 13000.66 lbs |
| Length | 6083 mm, 239.49 in |
| Width including mirrors | 2045 mm, 80.51 in |
| Height | 1985 mm, 78.15 in |
| Wheelbase | 3904 mm, 153.7 in |
| Front track | 1748 mm, 68.82 in |
| Rear (Back) track | 1709 mm, 67.28 in |
| Ride height (ground clearance) | 214 mm, 8.43 in |
| Minimum turning circle (turning diameter) | 15.8 m, 51.84 ft |
| Drivetrain Architecture | The Internal combustion engine (ICE) drives the rear wheels permanently, and the front wheels are driven through an electrically or mechanically operated clutch if necessary. |
| Drive wheel | All wheel drive (4×4) |
| 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, 373×34 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 |
Powertrain & Engine Architecture
At the heart of this Sierra 3500HD variant lies the Vortec L96 6.0-liter V8 engine. This engine is a member of the Vortec family, known for its robust construction and reliable performance. The L96 features a cast iron block and aluminum cylinder heads, contributing to its durability. It utilizes a multi-port fuel injection system for precise fuel delivery and is equipped with overhead valve (OHV) valvetrain with variable valve timing (VVT) to optimize performance and efficiency across the rev range. The engine produces 360 horsepower at 5400 rpm and 380 lb-ft (515 Nm) of torque at 4200 rpm. This power is delivered through a six-speed Hydra-Matic automatic transmission, specifically tuned for heavy-duty applications. The transmission features electronically controlled shifting and is designed to handle the substantial torque output of the L96 engine, making it well-suited for towing and hauling.
Driving Characteristics
The 6.0L V8 and automatic transmission combination in the Sierra 3500HD provides a comfortable and capable driving experience. While not as quick as some of the diesel-powered variants, the gasoline engine offers smooth and predictable power delivery. The automatic transmission shifts smoothly, and the gear ratios are optimized for both on-road cruising and off-road capability. Compared to the available diesel engines, this configuration prioritizes refinement and a more familiar driving feel for those accustomed to gasoline engines. The 6-speed automatic, while not offering the most advanced gear count, provides adequate ratios for maintaining optimal engine speed during various driving conditions. The 4WD system provides excellent traction in challenging conditions, making it a versatile truck for both work and recreational use.
Equipment & Trim Levels
The Sierra 3500HD Crew Cab Standard Box with the 6.0L V8 typically came standard with a comprehensive set of features. These included air conditioning, power windows and locks, a basic audio system, and a rearview camera. The Crew Cab configuration offered spacious seating for five passengers, making it a comfortable option for families or work crews. Higher trim levels, such as the SLT and Denali, added features like leather upholstery, heated and ventilated seats, a premium audio system, navigation, and advanced safety technologies. Optional extras included a trailer brake controller, a fifth-wheel hitch, and various appearance packages.
Chassis & Braking
The GMTK2XX platform features a fully boxed frame, providing a solid foundation for the truck’s heavy-duty capabilities. The front suspension utilizes a coil spring, double wishbone design with a transverse stabilizer bar, while the rear suspension employs a traditional leaf spring setup. This configuration balances ride comfort with load-carrying capacity. Braking duties are handled by ventilated disc brakes on all four wheels, providing ample stopping power. The front brakes measure 355×40 mm, while the rear brakes are 373×34 mm. An anti-lock braking system (ABS) is standard, enhancing safety and control during emergency braking situations.
Market Reception & Comparison
The 6.0L V8-equipped Sierra 3500HD was generally well-received by critics and consumers. It offered a compelling alternative to the diesel-powered models, particularly for those who preferred the simplicity and lower upfront cost of a gasoline engine. Fuel economy was comparable to other full-size trucks with gasoline engines, but naturally lower than the diesel options. Reliability was generally good, with the Vortec L96 engine proving to be a durable and dependable powerplant. Compared to the 6.6L Duramax diesel, the 6.0L V8 offered less torque and towing capacity, but it was also less expensive to purchase and maintain. The 6.0L was often seen as a good choice for those who didn’t require the maximum towing capacity of a diesel but still wanted a capable and reliable heavy-duty truck.
Legacy
The GMTK2XX Sierra 3500HD with the 6.0L V8 has established a reputation as a reliable and capable work truck. On the used car market, these trucks remain popular due to their affordability and proven durability. The Vortec L96 engine is known for its longevity, and with proper maintenance, it can provide many years of service. While newer trucks offer more advanced technology and features, the GMTK2XX Sierra 3500HD continues to be a viable option for those seeking a robust and dependable heavy-duty truck at a reasonable price. Parts availability is generally good, and the relatively simple design of the engine and transmission makes it easier to repair and maintain compared to more complex modern powertrains.
