2015-2019 Chevrolet Silverado 3500 HD III (K2XX) Crew Cab Long Box 6.0 V8 (360 Hp) SRW Automatic

Technical Specifications

The Chevrolet Silverado 3500HD III, specifically the Crew Cab Long Box configuration with the 6.0L V8 and automatic transmission, was a mainstay of Chevrolet’s heavy-duty truck offerings from 2015-2019. Positioned as a mid-range option within the 3500HD lineup, it slotted between the base model with the smaller 6.0L engine and the more powerful Duramax diesel variants. This configuration targeted buyers who needed substantial towing and payload capacity but didn’t require the added expense and complexity of a diesel powerplant. The K2XX platform, introduced in 2014, provided a stiffer frame and improved ride quality compared to previous generations, making it a more comfortable daily driver while maintaining its workhorse capabilities.

Powertrain & Engine Architecture

At the heart of this Silverado 3500HD variant lies the Vortec L96 6.0-liter V8 engine. This engine is a member of Chevrolet’s small-block V8 family, known for its durability and relatively simple design. The L96 features a cast iron block and aluminum cylinder heads, utilizing a multi-port fuel injection system for precise fuel delivery. The engine employs an overhead valve (OHV) valvetrain with variable valve timing (VVT) to optimize performance and efficiency across a wider RPM range. The six-speed Hydra-Matic automatic transmission, a GM-built unit, was the sole transmission option for this configuration. This transmission is known for its robust construction and smooth shifting characteristics, providing adequate gear ratios for both towing and everyday driving. The transmission was calibrated to work seamlessly with the L96’s torque curve, offering responsive acceleration and manageable gear changes even under heavy loads.

Driving Characteristics

The 6.0L V8 and six-speed automatic combination delivered a capable, if not exhilarating, driving experience. With 360 horsepower and 380 lb-ft of torque, the Silverado 3500HD offered sufficient power for most towing and hauling tasks. However, it lacked the low-end grunt of the Duramax diesel, requiring the transmission to downshift more frequently when climbing hills or accelerating with a heavy load. The automatic transmission’s gear ratios were well-suited for highway cruising, maintaining comfortable RPMs at typical speeds. Compared to the manual transmission equipped versions, the automatic offered greater convenience, especially in stop-and-go traffic. However, the manual transmission provided more driver control and potentially slightly better fuel economy. The overall driving experience was characterized by a comfortable ride, thanks to the K2XX platform’s improved suspension, and predictable handling, making it a suitable choice for both work and personal use.

Equipment & Trim Levels

The Silverado 3500HD III Crew Cab Long Box 6.0L Automatic typically came standard with features like air conditioning, power windows and locks, a basic infotainment system with a touchscreen display, 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 LT and LTZ, added features like leather upholstery, heated and ventilated front seats, a premium sound system, and advanced safety technologies. Optional extras included a navigation system, a sunroof, and various towing packages designed to enhance the truck’s capabilities. The interior design was functional and durable, with a focus on practicality rather than luxury.

Chassis & Braking

The Silverado 3500HD’s chassis was built around a fully boxed, high-strength steel frame, providing a solid foundation for heavy-duty use. The front suspension featured an independent torsion bar setup with double wishbone components, while the rear suspension utilized a traditional leaf spring design. This combination offered a good balance of ride comfort and load-carrying capacity. Braking duties were handled by ventilated disc brakes on all four wheels, providing ample stopping power even when towing. An Anti-lock Braking System (ABS) was standard, enhancing safety and control during emergency braking situations. The steering system employed a cone worm with recirculation balls, offering precise and responsive steering feel.

Market Reception & Comparison

The Silverado 3500HD 6.0L Automatic received generally positive reviews from automotive critics. It was praised for its comfortable ride, spacious interior, and capable powertrain. However, some reviewers noted that the 6.0L V8 lacked the power and fuel efficiency of the Duramax diesel. Compared to the diesel variants, the 6.0L offered a lower initial purchase price and potentially lower maintenance costs. The 6.0L was also considered a more reliable option than the diesel, as it had fewer complex components. Fuel economy was typical for a heavy-duty truck, averaging around 14-16 mpg in combined driving conditions.

Legacy

The Chevrolet Silverado 3500HD III (K2XX) Crew Cab Long Box 6.0L V8 Automatic remains a popular choice in the used truck market today. The Vortec L96 engine is known for its durability and relatively simple maintenance requirements, making it a reliable option for buyers seeking a capable and affordable heavy-duty truck. While not as fuel-efficient or powerful as the diesel variants, the 6.0L offers a compelling combination of capability, comfort, and value. These trucks continue to be used for a variety of tasks, including towing boats and trailers, hauling materials, and general work purposes. Their robust construction and readily available parts ensure that they will remain on the road for many years to come.