2016-2018 GMC Sierra 1500 IV (GMTK2XX facelift ) Regular Cab Long Box 4.3 EcoTec3 V6 (285297 Hp) Automatic FlexFuel

The GMC Sierra 1500, a full-size pickup truck manufactured by General Motors, has been a mainstay of the American automotive landscape for decades. The fourth generation, designated GMTK2XX, underwent a significant facelift in 2016, introducing updated styling and technology. This article focuses on the Regular Cab Long Box configuration equipped with the 4.3 EcoTec3 V6 engine paired with an automatic transmission, produced between 2016 and 2018. This variant occupied a key position in the Sierra 1500 lineup, offering a balance of capability and affordability for buyers prioritizing work and utility over outright luxury or maximum towing capacity.

Technical Specifications

INTRODUCTION

The 2016-2018 GMC Sierra 1500 Regular Cab Long Box with the 4.3L EcoTec3 V6 and automatic transmission represented a work-focused offering within the broader Sierra lineup. Built on the GMTK2XX platform, this configuration catered to buyers needing a robust, reliable pickup for hauling and light-duty tasks. The Regular Cab body style, combined with the longer bed, maximized cargo space, while the 4.3L engine provided a balance between power and fuel efficiency. This trim level typically served as the entry point into the Sierra 1500 range, appealing to fleet buyers, farmers, and individuals prioritizing practicality over premium features.

Powertrain & Engine Architecture

The heart of this Sierra 1500 is the 4.3L (262.4 cubic inch) EcoTec3 V6 engine, designated LV3. This engine is a naturally aspirated, 90-degree V6 featuring direct fuel injection and a variable valve timing system. The EcoTec3 family was designed for efficiency and durability, utilizing aluminum cylinder heads and a cast iron block. The engine produces 285 horsepower at 5300 rpm and 305 lb-ft of torque at 3900 rpm. When running on E85 fuel, output increases to 297 horsepower and 323 lb-ft of torque. The overhead valve (OHV) valvetrain, while traditional, contributes to the engine’s robust nature and relatively simple maintenance requirements. The engine is mated to a six-speed Hydra-Matic automatic transmission, known for its smooth shifting and reliability. This transmission is electronically controlled and features a torque converter lock-up clutch to improve fuel economy at highway speeds.

Driving Characteristics

The 4.3L V6 and six-speed automatic combination delivers adequate, though not exhilarating, performance. Acceleration is sufficient for everyday driving and moderate towing, but it won’t compete with the quicker V8-powered Sierra models. The automatic transmission is well-tuned, providing smooth gear changes and responsive downshifts. The gear ratios are optimized for towing and hauling, prioritizing low-end torque over outright speed. Compared to the available 5.3L or 6.2L V8 engines, the 4.3L feels noticeably less powerful, especially when fully loaded or climbing steep grades. However, the 4.3L offers a more comfortable and economical driving experience for those who don’t require the extra power. The rear-wheel-drive configuration provides a traditional truck feel, with predictable handling and good stability when properly loaded.

Equipment & Trim Levels

The Regular Cab Long Box 4.3L Sierra 1500 typically came standard with basic features such as air conditioning, power windows and locks, and a basic audio system. The interior upholstery was typically vinyl or cloth. Optional extras included upgraded audio systems, a rearview camera, Bluetooth connectivity, and various convenience packages. Higher trim levels, such as SLE and SLT, added features like leather upholstery, heated seats, and advanced safety technologies. The dashboard layout was functional and straightforward, prioritizing ease of use over aesthetic flair. The focus was on providing a durable and practical interior that could withstand the rigors of work-related use.

Chassis & Braking

The Sierra 1500’s chassis features an independent coil spring front suspension and a traditional leaf spring rear suspension. This setup provides a comfortable ride quality, even when hauling heavy loads. The rear leaf springs are designed to handle significant weight without excessive sag. Braking duties are handled by ventilated disc brakes on all four wheels. An Anti-lock Braking System (ABS) is standard, enhancing safety and control during emergency braking situations. The steering system utilizes a rack-and-pinion setup with electric power steering, providing responsive and precise handling. The standard tire size was 245/70R17 or 265/70R17, depending on the trim level.

Market Reception & Comparison

Critics generally praised the 4.3L EcoTec3 V6 for its fuel efficiency and adequate power for most tasks. However, some reviewers noted that it felt underpowered compared to the V8 options, especially when towing heavy loads. The 4.3L Sierra 1500 offered a more affordable entry point into the full-size pickup market, making it an attractive option for budget-conscious buyers. Compared to the 5.3L V8, the 4.3L delivered slightly better fuel economy, but at the cost of performance. The 4.3L also tended to have lower maintenance costs due to its simpler engine design. The 1.8L engine was a good choice for those who didn’t need the extra power of the V8s.

Legacy

The 4.3L EcoTec3 V6 has proven to be a relatively reliable powertrain, with many examples still on the road today. The engine is known for its durability and relatively simple maintenance requirements. However, like any vehicle, regular maintenance is crucial to ensure long-term reliability. On the used car market, the 2016-2018 Sierra 1500 Regular Cab Long Box 4.3L represents a good value for buyers seeking a capable and affordable pickup truck. Its combination of practicality, reliability, and fuel efficiency makes it a popular choice for those needing a workhorse vehicle.