The GMC Sierra 1500 IV, specifically the Crew Cab Standard Box configuration with the 6.2 EcoTec3 V8 engine and automatic transmission, represents a significant iteration in GMC’s full-size pickup truck lineage. Produced from 2016 to 2018 as part of the GMTK2XX platform’s facelift, this variant aimed to deliver a blend of robust capability, refined comfort, and modern technology to the American truck market. It occupied a premium position within the Sierra 1500 lineup, offering a substantial step up in performance and features compared to the base V6 models, while remaining a more accessible option than the Denali trim.
Technical Specifications
| Brand | GMC |
| Model | Sierra 1500 |
| Generation | Sierra 1500 IV (GMTK2XX, facelift 2016) Crew Cab Standard Box |
| Type (Engine) | 6.2 EcoTec3 V8 (420 Hp) Automatic |
| Start of production | 2016 |
| End of production | 2018 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Pick-up |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (urban) | 15.7 l/100 km (15 US mpg, 18 UK mpg, 6.4 km/l) |
| Fuel consumption (extra urban) | 11.2 l/100 km (21 US mpg, 25.2 UK mpg, 8.9 km/l) |
| Fuel Type | Petrol (Gasoline) |
| Weight-to-power ratio | 5.7 kg/Hp, 174.7 Hp/tonne |
| Weight-to-torque ratio | 3.9 kg/Nm, 259.2 Nm/tonne |
| Power | 420 Hp @ 5600 rpm |
| Power per litre | 68.2 Hp/l |
| Torque | 623 Nm @ 4100 rpm (459.5 lb.-ft. @ 4100 rpm) |
| Maximum engine speed | 6000 rpm |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | L86 |
| Engine displacement | 6162 cm3 (376.03 cu. in.) |
| Number of cylinders | 8 |
| Engine configuration | V-engine |
| Cylinder Bore | 103.25 mm (4.06 in.) |
| Piston Stroke | 92 mm (3.62 in.) |
| Compression ratio | 11.5:1 |
| Number of valves per cylinder | 2 |
| Fuel injection system | Direct injection |
| Engine aspiration | Naturally aspirated engine |
| Valvetrain | OHV |
| Engine oil capacity | 8 l (8.45 US qt | 7.04 UK qt) |
| Coolant | 14.8 l (15.64 US qt | 13.02 UK qt) |
| Kerb Weight | 2404 kg (5299.91 lbs.) |
| Max. weight | 3175 kg (6999.68 lbs.) |
| Max load | 771 kg (1699.76 lbs.) |
| Trunk (boot) space – minimum | 1728 l (61.02 cu. ft.) |
| Fuel tank capacity | 98 l (25.89 US gal | 21.56 UK gal) |
| Permitted trailer load with brakes (12%) | 4218 kg (9299.1 lbs.) |
| Length | 6067 mm (238.86 in.) |
| Width including mirrors | 2032 mm (80 in.) |
| Height | 1873 mm (73.74 in.) |
| Wheelbase | 3886 mm (152.99 in.) |
| Front track | 1747 mm (68.78 in.) |
| Rear (Back) track | 1716 mm (67.56 in.) |
| Ride height (ground clearance) | 216 mm (8.5 in.) |
| Minimum turning circle (turning diameter) | 14.8 m (48.56 ft.) |
| Approach angle | 16.7° |
| Departure angle | 23.3° |
| Ramp-over (brakeover) angle | 17.5° |
| Drivetrain Architecture | The Internal combustion engine (ICE) drives the rear wheels of the vehicle. |
| Drive wheel | Rear wheel drive |
| Number of gears and type of gearbox | 8 gears, automatic transmission Hydra-Matic |
| Front suspension | Independent coil spring |
| Rear suspension | Rigid axle suspension, Leaf spring |
| Front brakes | Ventilated discs, 330×30 mm |
| Rear brakes | Ventilated discs, 345×20 mm |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Tires size | 245/70 R17; 265/70 R17 |
| Wheel rims size | 8J x 17 |
INTRODUCTION
The 2016-2018 GMC Sierra 1500 Crew Cab with the 6.2L EcoTec3 V8 and automatic transmission was positioned as a strong contender in the highly competitive full-size pickup truck segment. Building upon the GMTK2XX platform introduced in 2014, the facelift brought updated styling, enhanced technology, and refinements to the powertrain. The Crew Cab configuration offered a spacious interior, making it suitable for both work and family use. This particular variant catered to buyers who desired significant power for towing and hauling, combined with the convenience of an automatic transmission.
Powertrain & Engine Architecture
At the heart of this Sierra 1500 lies the L86 6.2-liter EcoTec3 V8 engine. This naturally aspirated engine utilizes direct injection, a hallmark of the EcoTec3 series, to optimize fuel efficiency and power output. The engine produces 420 horsepower at 5600 rpm and 459.5 lb.-ft. of torque at 4100 rpm. A key feature of the L86 is its Active Fuel Management (AFM) system, also known as cylinder deactivation, which shuts down four cylinders during light-load driving conditions to improve fuel economy. The engine employs an overhead valve (OHV) valvetrain, a design choice prioritizing durability and low-end torque. The engine is paired with the Hydra-Matic 8L90 eight-speed automatic transmission. This transmission provides smooth shifting and a wide gear ratio spread, contributing to both performance and fuel efficiency. The transmission’s programming is tuned to balance responsiveness with comfortable cruising.
Driving Characteristics
The 6.2L V8 and 8-speed automatic combination delivers a noticeably more spirited driving experience compared to the Sierra 1500’s smaller engine options. Acceleration is strong, making merging onto highways and passing maneuvers effortless. The eight-speed transmission keeps the engine in its optimal power band, providing ample torque for towing and hauling heavy loads. While not as fuel-efficient as the V6 or smaller V8 options, the 6.2L offers a compelling balance of power and usability. The automatic transmission shifts smoothly and predictably, although some drivers may prefer the more direct control offered by a manual transmission. The weight of the Crew Cab configuration, combined with the robust drivetrain, results in a substantial but planted feel on the road.
Equipment & Trim Levels
The 2016-2018 Sierra 1500 Crew Cab 6.2L typically came standard with features such as air conditioning, power windows and locks, a rearview camera, and a basic infotainment system. Higher trim levels added features like leather upholstery, heated and ventilated front seats, a premium sound system, navigation, and advanced safety technologies. Optional extras included a sunroof, upgraded wheels, and various appearance packages. Interior materials were generally durable and well-appointed, reflecting the truck’s premium positioning. The standard dashboard layout was functional and user-friendly, with logically placed controls.
Chassis & Braking
The Sierra 1500 utilizes a fully boxed frame for enhanced rigidity and durability. The front suspension features independent coil springs, providing a comfortable ride and good handling characteristics. The rear suspension employs a traditional leaf spring setup, optimized for load-carrying capacity. Braking duties are handled by ventilated disc brakes at all four corners, with ABS (Anti-lock Braking System) standard. The braking system is adequately sized for the truck’s weight and performance capabilities. Steering is rack-and-pinion with electric power assist, providing a responsive and precise feel.
Market Reception & Comparison
Critics generally praised the 6.2L EcoTec3 V8 for its strong power and towing capabilities. The eight-speed automatic transmission was also well-received for its smooth operation and efficiency. However, some reviewers noted that the fuel economy, while improved by AFM technology, still lagged behind competitors with smaller engines. Compared to the 5.3L V8, the 6.2L offered a significant performance boost but came at a higher price point. Against rivals like the Ford F-150 and Ram 1500, the Sierra 1500 6.2L held its own in terms of capability and refinement.
Legacy
The L86 6.2L EcoTec3 V8 has proven to be a relatively reliable engine, although AFM system issues have been reported by some owners. Regular maintenance, including oil changes and fluid checks, is crucial for long-term durability. On the used car market, the 2016-2018 Sierra 1500 Crew Cab 6.2L commands a higher price than models equipped with smaller engines, reflecting its desirable combination of power, comfort, and capability. It remains a popular choice for buyers seeking a capable and well-equipped full-size pickup truck.
