The GMC Sierra 1500 IV, specifically the Double Cab configuration with the 5.3 EcoTec3 V8 engine and four-wheel drive, represents a significant iteration of GMC’s full-size pickup truck. Produced from 2016 to 2018 as part of the GMTK2XX platform’s facelift, this variant aimed to balance capability, comfort, and efficiency within the highly competitive American truck market. This model year saw updates to the exterior styling, interior features, and technology, building upon the foundation laid by the previous generation. The 5.3L V8/Automatic combination positioned itself as a popular choice for buyers seeking a robust powertrain without the higher price tag of the 6.2L engine.
Technical Specifications
| Brand | GMC |
| Model | Sierra 1500 |
| Generation | Sierra 1500 IV (GMTK2XX, facelift 2016) Double Cab |
| Type (Engine) | 5.3 EcoTec3 V8 (355/380 Hp) 4WD Automatic FlexFuel |
| Start of production | 2016 |
| End of production | 2018 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Pick-up |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (urban) | 14.7 l/100 km (16 US mpg, 19.2 UK mpg) |
| Fuel consumption (extra urban) | 10.7 l/100 km (22 US mpg, 26.4 UK mpg) |
| Fuel Type | Petrol / Ethanol – E85 |
| Weight-to-power ratio | 6.8 kg/Hp, 146.1 Hp/tonne |
| Weight-to-torque ratio | 4.7 kg/Nm, 213.6 Nm/tonne |
| Power | 355 Hp @ 5600 rpm |
| Power per litre | 66.6 Hp/l |
| Power (Ethanol – E85) | 380 Hp @ 5600 rpm |
| Power per litre (Ethanol – E85) | 71.3 Hp/l |
| Torque | 519 Nm @ 4100 rpm (382.79 lb.-ft. @ 4100 rpm) |
| Torque (Ethanol – E85) | 564 Nm @ 4100 rpm |
| Maximum engine speed | 5800 rpm |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | L83 |
| Engine displacement | 5328 cm3 (325.13 cu. in.) |
| Number of cylinders | 8 |
| Engine configuration | V-engine |
| Cylinder Bore | 96 mm (3.78 in.) |
| Piston Stroke | 92 mm (3.62 in.) |
| Compression ratio | 11:1 |
| 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 | 2430 kg (5357.23 lbs.) |
| Max. weight | 3266 kg (7200.3 lbs.) |
| Max load | 836 kg (1843.06 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%) | 2812 kg (6199.4 lbs.) |
| Length | 5828 mm (229.45 in.) |
| Width including mirrors | 2032 mm (80 in.) |
| Height | 1877 mm (73.9 in.) |
| Wheelbase | 3645 mm (143.5 in.) |
| Front track | 1750 mm (68.9 in.) |
| Rear (Back) track | 1716 mm (67.56 in.) |
| Ride height (ground clearance) | 231 mm (9.09 in.) |
| Minimum turning circle (turning diameter) | 14.3 m (46.92 ft.) |
| Approach angle | 17.9° |
| Departure angle | 23.1° |
| Ramp-over (brakeover) angle | 19.1° |
| Drivetrain Architecture | The Internal combustion engine (ICE) drives the rear wheels permanently, and the front wheels are driven through an electrically or mechanically operated clutch if necessary. |
| Drive wheel | All wheel drive (4×4) |
| Number of gears and type of gearbox | 6 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 |
Powertrain & Engine Architecture
At the heart of this Sierra 1500 Double Cab lies the 5.3-liter EcoTec3 V8 engine, designated as the L83. This engine is a member of GM’s small-block V8 family, known for its durability and relatively simple design. The EcoTec3 designation signifies several advancements over previous GM V8s, including direct injection, active fuel management (cylinder deactivation), and variable valve timing. Direct injection improves fuel efficiency and power output by precisely controlling fuel delivery into the combustion chambers. Active Fuel Management allows the engine to shut down four cylinders during light-load cruising, further enhancing fuel economy. The L83 produces 355 horsepower at 5600 rpm and 382.79 lb-ft of torque at 4100 rpm. When running on E85 fuel, the engine output increases to 380 horsepower and 564 Nm of torque. The engine is paired with a six-speed Hydra-Matic automatic transmission, a robust and well-proven unit. This transmission is designed to handle the high torque output of the V8 and provide smooth, responsive shifting.
Driving Characteristics
The 5.3L V8 and six-speed automatic combination delivers a comfortable and capable driving experience. While not as quick as the 6.2L V8 option, the 5.3L provides ample power for everyday driving and towing. The automatic transmission is tuned for smooth shifts and generally avoids hunting for gears. The gear ratios are optimized for both on-road cruising and off-road capability. The 4WD system provides enhanced traction in slippery conditions, making it suitable for a variety of terrains. The Double Cab configuration offers a spacious interior and a comfortable ride, making it a practical choice for families and those who frequently carry passengers. However, the weight of the vehicle and the relatively conservative tuning of the transmission mean that acceleration is not particularly brisk, and passing maneuvers require planning.
Equipment & Trim Levels
The 2016-2018 GMC Sierra 1500 Double Cab with the 5.3L V8 was available in several trim levels, including SLE, SLT, and Denali. The SLE trim served as the entry-level option, offering standard features such as air conditioning, power windows and locks, a basic infotainment system, and cloth upholstery. The SLT trim added features like leather upholstery, heated front seats, a premium audio system, and additional chrome exterior trim. The Denali trim represented the pinnacle of luxury, with features such as unique exterior styling, a more refined interior, and advanced technology features. Standard safety features included ABS, stability control, and multiple airbags. Optional extras included a navigation system, a rear-seat entertainment system, and a variety of driver-assistance technologies.
Chassis & Braking
The Sierra 1500 IV utilizes a body-on-frame construction, providing a robust and durable platform. The front suspension features independent coil springs, while the rear suspension employs a traditional leaf spring setup. This configuration balances ride comfort with load-carrying capacity. The braking system consists of ventilated discs at all four wheels, providing adequate stopping power for the vehicle’s weight. The front brakes measure 330×30 mm, while the rear brakes are 345×20 mm. An anti-lock braking system (ABS) is standard, enhancing safety and control during emergency braking situations.
Market Reception & Comparison
The GMC Sierra 1500 with the 5.3L V8 and automatic transmission was generally well-received by critics and consumers alike. It was praised for its comfortable ride, spacious interior, and capable powertrain. Fuel economy was considered average for a full-size pickup truck, with EPA estimates of 16 mpg city and 22 mpg highway. Compared to the 6.2L V8 option, the 5.3L offered a more affordable price point and slightly better fuel economy, but at the expense of some performance. Compared to competitors like the Ford F-150 and Ram 1500, the Sierra 1500 was considered a strong contender, offering a compelling combination of features, capability, and value.
Legacy
The L83 5.3L EcoTec3 V8 has proven to be a relatively reliable engine, with few widespread issues reported. The six-speed Hydra-Matic automatic transmission is also known for its durability. In the used car market, these Sierra 1500s remain popular choices for buyers seeking a capable and affordable full-size pickup truck. Regular maintenance, including oil changes and fluid checks, is essential to ensure long-term reliability. The combination of a proven powertrain, a comfortable interior, and a spacious bed makes this Sierra 1500 a practical and versatile vehicle that continues to hold its value.
