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

The Chevrolet Silverado 3500 HD III (K2XX) Double Cab Long Box, equipped with the 6.0-liter V8 engine and a six-speed automatic transmission, represents a significant iteration in Chevrolet’s heavy-duty truck lineage. Produced from 2015 to 2019, this variant occupied a sweet spot in the Silverado 3500HD lineup, offering a balance of capability, comfort, and affordability for buyers needing serious towing and hauling capacity without the expense of diesel options or higher trim levels. It was part of the third generation of the K2XX platform, known for its enhanced strength and refinement compared to its predecessors.

Technical Specifications

INTRODUCTION

The Chevrolet Silverado 3500HD III, specifically the Double Cab Long Box configuration with the 6.0L V8 and automatic transmission, was introduced as part of the K2XX generation in 2015. This generation represented a significant overhaul for the Silverado HD line, focusing on increased strength, improved ride quality, and enhanced interior features. Positioned as a mid-range offering, this variant catered to customers who required the substantial towing and payload capabilities of a 3500HD truck but didn’t necessarily need the higher cost and complexity of a Duramax diesel engine. It served as a workhorse for contractors, farmers, and individuals with substantial towing needs, like large campers or boats.

Powertrain & Engine Architecture

At the heart of this Silverado 3500HD 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 robust unit designed to handle the high torque output of the V8, efficiently transfers power to the rear wheels. This transmission features electronically controlled shifting for smooth and responsive operation. The engine produces 360 horsepower at 5400 rpm and 380 lb-ft of torque at 4200 rpm, providing ample power for demanding tasks.

Driving Characteristics

The 6.0L V8 and six-speed automatic combination delivers a driving experience focused on usability and capability rather than outright speed. Acceleration is adequate for everyday driving and even for towing moderate loads, but it won’t provide the brisk performance of lighter-duty trucks or those equipped with the diesel engine. The automatic transmission is well-tuned, offering smooth shifts and holding gears appropriately when under load. The gear ratios are optimized for towing, providing sufficient low-end torque to get heavy trailers moving. Compared to the manual transmission option, the automatic offers greater convenience, especially in stop-and-go traffic or when navigating challenging terrain. However, the manual transmission generally provides slightly better fuel economy and a more direct connection to the engine.

Equipment & Trim Levels

The Silverado 3500HD Double Cab Long Box with the 6.0L V8 typically came standard with features like air conditioning, power windows and locks, a basic audio system, and vinyl upholstery. The Double Cab configuration offered a more spacious rear seat compared to the standard cab models, making it suitable for carrying passengers. Optional extras included upgraded audio systems, leather upholstery, heated seats, a navigation system, and various trailering packages. The Long Box provided a generous cargo bed length, ideal for hauling large items. Trim levels varied, but this configuration often fell into the LT or Work Truck trims, offering a balance of features and affordability.

Chassis & Braking

The K2XX chassis provided a solid foundation for the Silverado 3500HD. The front suspension utilizes an independent torsion bar and double wishbone design, contributing to a relatively comfortable ride for a heavy-duty truck. The rear suspension employs a traditional leaf spring setup, designed to handle heavy loads. Braking duties are handled by ventilated disc brakes on all four wheels, providing ample stopping power. An Anti-lock Braking System (ABS) is standard, enhancing safety and control during emergency braking situations. The truck’s robust frame and heavy-duty components contribute to its impressive towing and payload capacity.

Market Reception & Comparison

Critics generally praised the Silverado 3500HD III for its increased strength, improved ride quality, and user-friendly features. The 6.0L V8 engine was considered a capable option for those who didn’t require the extreme towing capacity of the diesel engine. However, fuel economy was a common criticism, as the V8 engine is inherently less efficient than the diesel alternative. Compared to the 6.6L Duramax diesel, the 6.0L V8 offered significantly lower towing capacity and fuel economy, but at a considerably lower purchase price. The 6.0L also required less frequent and less expensive maintenance than the diesel engine.

Legacy

The Chevrolet Silverado 3500HD III (K2XX) with the 6.0L V8 and automatic transmission has proven to be a reliable and durable work truck. The Vortec L96 engine is known for its longevity, and the Hydra-Matic transmission is generally considered a robust unit. In the used car market, these trucks remain popular among buyers seeking a capable and affordable heavy-duty truck. While not as sought after as the diesel models, the 6.0L V8 variants offer a compelling value proposition for those who prioritize simplicity, affordability, and proven reliability.