The GMC Sierra 1500 IV, specifically the Crew Cab Short Box configuration with the 4.3 EcoTec3 V6 engine and four-wheel drive, 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 balance capability with efficiency and affordability within the Sierra 1500 range. It served as a popular choice for buyers seeking a versatile truck for both work and family use, offering a step down in price and performance from the larger V8 options while still providing substantial towing and hauling capacity. This model year saw updates to the exterior styling, interior features, and technology, solidifying the Sierra’s position in the highly competitive North American truck market.
Technical Specifications
| Brand | GMC |
| Model | Sierra 1500 |
| Generation | Sierra 1500 IV (GMTK2XX, facelift 2016) Crew Cab Short Box |
| Type (Engine) | 4.3 EcoTec3 V6 (285/297 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) | 13.8 l/100 km (17 US mpg) |
| Fuel consumption (extra urban) | 10.7 l/100 km (22 US mpg) |
| Fuel Type | Petrol / Ethanol – E85 |
| Weight-to-power ratio | 8.4 kg/Hp |
| Weight-to-torque ratio | 5.8 kg/Nm |
| Power | 285 Hp @ 5300 rpm |
| Power per litre | 66.3 Hp/l |
| Power (Ethanol – E85) | 297 Hp @ 5300 rpm |
| Power per litre (Ethanol – E85) | 69.1 Hp/l |
| Torque | 413 Nm @ 3900 rpm (304.61 lb.-ft. @ 3900 rpm) |
| Torque (Ethanol – E85) | 447 Nm @ 3900 rpm |
| Maximum engine speed | 5800 rpm |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | LV3 |
| Engine displacement | 4300 cm3 (262.4 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | V-engine |
| Cylinder Bore | 99.6 mm (3.92 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 | 5.7 l (6.02 US qt | 5.02 UK qt) |
| Coolant | 14 l (14.79 US qt | 12.32 UK qt) |
| Kerb Weight | 2405 kg (5302.12 lbs.) |
| Max. weight | 3220 kg (7098.88 lbs.) |
| Max load | 815 kg (1796.77 lbs.) |
| Trunk (boot) space – minimum | 1512 l (53.4 cu. ft.) |
| Fuel tank capacity | 98 l (25.89 US gal | 21.56 UK gal) |
| Permitted trailer load with brakes (12%) | 3175 kg (6999.68 lbs.) |
| Length | 5825 mm (229.33 in.) |
| Width including mirrors | 2032 mm (80 in.) |
| Height | 1879 mm (73.98 in.) |
| Wheelbase | 3645 mm (143.5 in.) |
| Front track | 1745 mm (68.7 in.) |
| Rear (Back) track | 1716 mm (67.56 in.) |
| Ride height (ground clearance) | 226 mm (8.9 in.) |
| Minimum turning circle (turning diameter) | 14.4 m (47.24 ft.) |
| Approach angle | 17.4° |
| Departure angle | 23.2° |
| Ramp-over (brakeover) angle | 19.0° |
| 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
The heart of this Sierra 1500 variant is the 4.3L LV3 EcoTec3 V6 engine. This engine is a naturally aspirated, direct-injected powerplant featuring Active Fuel Management (cylinder deactivation) to improve fuel economy. The LV3 utilizes a 11:1 compression ratio and an overhead valve (OHV) valvetrain. Direct injection allows for precise fuel delivery, enhancing both power and efficiency. The engine is capable of running on gasoline or E85 flex-fuel, with a slight power increase (297 hp) when utilizing E85. The engine is paired with a six-speed Hydra-Matic automatic transmission, known for its smooth shifting and durability. This transmission was specifically tuned to work with the characteristics of the 4.3L V6, providing adequate acceleration and towing capability. The longitudinal engine layout and rear-wheel-drive based four-wheel-drive system are standard for this class of truck.
Driving Characteristics
The 4.3L V6 and six-speed automatic combination delivers a balanced driving experience. While not as powerful as the available 5.3L or 6.2L V8 engines, the 4.3L provides sufficient power for everyday driving and moderate towing needs. Acceleration is adequate, though not particularly brisk. The automatic transmission is well-programmed, offering smooth gear changes and responsive downshifts. The gear ratios are optimized for both highway cruising and low-end torque for hauling. Compared to manual transmission equipped Sierra 1500s, the automatic offers greater convenience, especially in stop-and-go traffic. However, it does result in a slight reduction in fuel economy and a less engaging driving experience. The four-wheel-drive system provides enhanced traction in inclement weather and off-road conditions.
Equipment & Trim Levels
The 4.3L V6 engine was typically offered in the SLE, SLT, and Denali trim levels of the Sierra 1500. Standard features on the SLE trim included air conditioning, power windows and locks, a basic infotainment system with a touchscreen display, and a rearview camera. The SLT trim added features such as leather upholstery, heated front seats, a premium audio system, and additional chrome exterior trim. The Denali trim, the most luxurious offering, included all of the SLT features plus unique exterior styling, a more refined interior, and advanced safety technologies. Optional extras available across the trim levels included a navigation system, a sunroof, and a trailering package.
Chassis & Braking
The Sierra 1500 IV utilizes a fully boxed frame for enhanced rigidity and durability. The front suspension features independent coil springs, while the rear suspension employs a traditional leaf spring setup. This configuration provides a comfortable ride quality while maintaining a respectable payload capacity. Braking duties are handled by ventilated disc brakes on all four wheels. The front brakes measure 330x30mm, while the rear brakes are slightly larger at 345x20mm. An Anti-lock Braking System (ABS) is standard. Steering is rack-and-pinion with electric power assist, providing precise and responsive handling.
Market Reception & Comparison
The 4.3L V6 Sierra 1500 was generally well-received by critics as a capable and efficient option in the full-size truck segment. It offered a compelling alternative to the V8-powered models, particularly for buyers who prioritized fuel economy and affordability. Fuel economy figures averaged around 17 mpg in the city and 22 mpg on the highway. Compared to the 5.3L V8, the 4.3L offered slightly better fuel economy but significantly less power and towing capacity. Reliability was generally good, with the EcoTec3 engine proving to be a durable and dependable powerplant. However, some owners reported minor issues with the cylinder deactivation system.
Legacy
The 4.3L EcoTec3 V6-powered Sierra 1500 has become a popular choice in the used truck market. Its combination of capability, efficiency, and affordability makes it an attractive option for buyers seeking a reliable and versatile pickup truck. The engine has proven to be relatively durable, and parts availability is good. While not as sought-after as the V8 models, the 4.3L Sierra 1500 offers a compelling value proposition for those who don’t require the ultimate in towing and hauling performance. These trucks continue to be seen on roads today, a testament to their build quality and enduring appeal.
