2018-2021 Chevrolet Silverado 1500 IV Double Cab 4.3 EcoTec3 V6 (285 Hp) Automatic

The Chevrolet Silverado 1500 IV Double Cab, equipped with the 4.3 EcoTec3 V6 engine and a six-speed automatic transmission, was a popular configuration within the fourth generation of Chevrolet’s full-size pickup truck, produced from 2018 to 2021. This variant occupied a middle ground in the Silverado 1500 lineup, offering a balance between capability, fuel efficiency, and affordability. It served as a strong competitor in the highly contested full-size truck segment, appealing to buyers who didn’t require the higher towing capacities of the larger V8 engines but still desired a robust and versatile vehicle.

Technical Specifications

INTRODUCTION

The Chevrolet Silverado 1500 IV Double Cab 4.3 EcoTec3 V6 Automatic, launched in 2018, represented a significant update to Chevrolet’s best-selling full-size pickup. This fourth generation (often referred to as the “Silverado HD” despite being a 1500 series) brought with it a lighter weight construction utilizing high-strength steel, updated styling, and a new generation of engines. The 4.3L EcoTec3 V6, paired with the six-speed Hydra-Matic automatic, was positioned as the entry-level engine option for buyers prioritizing fuel economy and everyday usability over maximum towing and hauling capacity. It was a key component of Chevrolet’s strategy to offer a diverse range of Silverado configurations to cater to a broad spectrum of customer needs.

Powertrain & Engine Architecture

The heart of this Silverado variant is the 4.3L EcoTec3 V6 engine, designated with the code LV3. This engine is a naturally aspirated, direct-injected V6 featuring a robust cast iron block and aluminum cylinder heads. The direct injection system allows for precise fuel delivery, contributing to improved efficiency and power output. The engine utilizes an overhead valve (OHV) valvetrain, a design choice that prioritizes compactness and reliability. A key feature of the EcoTec3 family is its Active Fuel Management (AFM) system, also known as cylinder deactivation. This technology allows the engine to seamlessly switch between six and four cylinders under light load conditions, further enhancing fuel economy. The six-speed Hydra-Matic automatic transmission is a conventional torque converter automatic, known for its smooth shifting and durability. It’s geared for a balance of acceleration and highway cruising efficiency. The transmission’s gear ratios are optimized to work with the V6’s torque curve, providing adequate performance for most everyday driving scenarios.

Driving Characteristics

The 4.3L V6-powered Silverado 1500 Double Cab delivers a comfortable and capable driving experience, though it doesn’t offer the exhilarating acceleration of the larger V8 options. With 285 horsepower and 305 lb-ft of torque, it provides sufficient power for daily commuting, light hauling, and moderate towing. The six-speed automatic transmission shifts smoothly, and the AFM system is generally unobtrusive. However, drivers may notice a slight difference in engine feel when the system switches between six and four cylinders. Compared to the 5.3L or 6.2L V8 models, the 4.3L feels less powerful, particularly when fully loaded or towing a significant trailer. The gear ratios are tuned for efficiency, meaning the engine may need to downshift more frequently when climbing hills or accelerating quickly. The rear-wheel-drive configuration provides a traditional truck feel, while four-wheel drive was available as an option for improved traction in inclement weather.

Equipment & Trim Levels

The 4.3L EcoTec3 V6 was typically offered on the base Silverado 1500 LS and LT trim levels. The LS trim provided a functional and affordable option, featuring standard amenities such as air conditioning, a basic infotainment system with a 7-inch touchscreen, and cloth upholstery. The LT trim added more comfort and convenience features, including upgraded cloth or available leather upholstery, an 8-inch touchscreen, and keyless entry. Optional extras available on both trims included a premium audio system, a navigation system, and various safety features such as blind-spot monitoring and rear cross-traffic alert. The Double Cab configuration offered a spacious interior with seating for five passengers and a rear-hinged rear door for easy access.

Chassis & Braking

The Silverado 1500 IV Double Cab utilized a fully boxed frame constructed from high-strength steel, contributing to its improved rigidity and reduced weight. The front suspension featured independent coil springs, providing a comfortable ride and responsive handling. The rear suspension employed a traditional leaf spring setup, designed to handle heavier loads. Braking duties were handled by ventilated disc brakes on all four wheels, with larger rotors on the rear axle. Anti-lock brakes (ABS) were standard equipment. The steering system utilized electric power steering, providing a light and precise steering feel. The suspension tuning was geared towards providing a balance between ride comfort and load-carrying capability.

Market Reception & Comparison

The 4.3L EcoTec3 V6-equipped Silverado 1500 received generally positive reviews, particularly for its fuel efficiency and affordability. Critics noted that it offered a competitive alternative to the V8-powered models for buyers who didn’t require maximum towing capacity. Compared to the 5.3L V8, the 4.3L offered slightly better fuel economy, but significantly less power and towing capability. The 4.3L also proved to be a more reliable option than some of the earlier iterations of the 5.3L V8, with fewer reports of oil consumption issues. However, some reviewers found the engine to be underpowered when fully loaded or towing. Against competitors like the Ford F-150 and Ram 1500, the Silverado 1500 4.3L offered a compelling value proposition.

Legacy

The 4.3L EcoTec3 V6 has proven to be a relatively reliable powertrain, with few widespread mechanical issues reported. The Hydra-Matic six-speed automatic transmission is also known for its durability. In the used car market, these Silverado 1500s represent a good value for buyers seeking a capable and affordable full-size pickup. While not as sought after as the V8 models, the 4.3L variants offer a practical and economical option for everyday use. Regular maintenance, including oil changes and transmission fluid flushes, is crucial for ensuring the long-term reliability of this powertrain. The 4.3L EcoTec3 V6 helped Chevrolet broaden its appeal in the full-size truck segment, attracting buyers who prioritized fuel efficiency and affordability without sacrificing capability.