The GMC Sierra 1500 IV, produced from 2014 to 2015, represented a significant update to GMC’s full-size pickup truck line. This generation, designated GMTK2XX, offered a range of engine and configuration options, with the Regular Cab Standard Box configuration featuring a 4.3 EcoTec3 V6 engine paired with a four-wheel drive system and an automatic transmission being a popular choice. This particular variant aimed to provide a balance of capability, fuel efficiency, and affordability within the Sierra 1500 lineup, appealing to buyers who didn’t require the space of a crew cab or the power of a larger V8 engine.
Technical Specifications
| Brand | GMC |
| Model | Sierra 1500 |
| Generation | Sierra 1500 IV (GMTK2XX) Regular Cab Standard Box |
| Type (Engine) | 4.3 EcoTec3 V6 (285/297 Hp) 4WD Automatic FlexFuel |
| Start of production | 2014 |
| End of production | 2015 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Pick-up |
| Seats | 3 |
| Doors | 2 |
| 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 | 7.3 kg/Hp |
| Weight-to-torque ratio | 5 kg/Nm |
| Power | 285 Hp @ 5300 rpm |
| Power (Ethanol – E85) | 297 Hp @ 5300 rpm |
| 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 capacity | 14 l (14.79 US qt | 12.32 UK qt) |
| Kerb Weight | 2080 kg (4585.62 lbs.) |
| Max. weight | 3039 kg (6699.85 lbs.) |
| Max load | 959 kg (2114.23 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%) | 3447 kg (7599.33 lbs.) |
| Length | 5221 mm (205.55 in.) |
| Width including mirrors | 2032 mm (80 in.) |
| Height | 1883 mm (74.13 in.) |
| Wheelbase | 3023 mm (119.02 in.) |
| Front track | 1745 mm (68.7 in.) |
| Rear (Back) track | 1716 mm (67.56 in.) |
| Ride height (ground clearance) | 218 mm (8.58 in.) |
| Minimum turning circle (turning diameter) | 12.2 m (40.03 ft.) |
| Front brakes | Ventilated discs, 330×30 mm |
| Rear brakes | Ventilated discs, 345×20 mm |
| Number of gears and type of gearbox | 6 gears, automatic transmission Hydra-Matic |
Introduction
The 2014-2015 GMC Sierra 1500 with the 4.3L EcoTec3 V6 and four-wheel drive represented a key offering in the light-duty pickup segment. Built on the GMTK2XX platform, this Sierra aimed to deliver a blend of capability and efficiency. The Regular Cab configuration, combined with the standard box, positioned this truck as a work-focused option, ideal for individuals or small businesses needing a robust vehicle without the added size and cost of larger cabs. It served as the entry point into the Sierra 1500 range, offering a more affordable alternative to the 5.3L and 6.2L V8 options.
Powertrain & Engine Architecture
The heart of this Sierra variant is the 4.3L EcoTec3 V6 engine, designated LV3. This engine is a naturally aspirated, direct-injected V6 producing 285 horsepower and 305 lb-ft of torque on gasoline, and up to 297 horsepower and 323 lb-ft of torque when running on E85 flex-fuel. The direct injection system, combined with active fuel management (cylinder deactivation), contributes to improved fuel economy. The engine utilizes an overhead valve (OHV) valvetrain, a design choice that prioritizes compactness and reliability. The 4L60E four-speed automatic transmission, known as the Hydra-Matic, was the sole transmission option for this engine and drivetrain combination. While not the most modern transmission in terms of gear count, it was a proven and durable unit.
Driving Characteristics
The 4.3L V6, while not delivering the outright acceleration of the larger V8s, provided adequate power for everyday tasks and moderate towing. The four-speed automatic transmission, while reliable, had relatively wide gear ratios. This meant that the engine often operated at higher RPMs during highway cruising, potentially impacting fuel economy and noise levels. Compared to the 5.3L V8, the 4.3L felt noticeably less powerful, especially when fully loaded or towing. However, the lower weight of the V6 engine contributed to slightly better handling and braking performance. The 4WD system provided enhanced traction in inclement weather and on unpaved surfaces.
Equipment & Trim Levels
The base Regular Cab Sierra 1500 typically came standard with features like air conditioning, a basic audio system, and vinyl upholstery. Higher trim levels, such as SLE and SLT, added features like power windows and locks, keyless entry, upgraded audio systems, and cloth or leather upholstery. Optional extras included a trailer hitch, upgraded wheels, and various convenience packages. The interior design was functional and durable, prioritizing practicality over luxury. The dashboard layout was straightforward, with easy-to-use controls.
Chassis & Braking
The GMTK2XX Sierra 1500 featured a fully boxed frame, contributing to its robust construction and towing capacity. The front suspension utilized independent coil springs, while the rear suspension employed a traditional leaf spring setup. This configuration provided a comfortable ride quality, although it wasn’t as refined as some independent rear suspension designs. Braking duties were handled by ventilated disc brakes on all four wheels. ABS (Anti-lock Braking System) was standard. The rear axle ratio varied depending on the specific configuration, impacting both towing capacity and fuel economy.
Market Reception & Comparison
Critics generally praised the Sierra 1500’s overall build quality and ride comfort. However, the 4.3L V6 engine received mixed reviews. Some reviewers found it adequate for light-duty tasks, while others criticized its lack of power compared to the V8 options. Fuel economy was considered competitive for a full-size pickup truck, particularly when utilizing the E85 flex-fuel capability. Compared to the 5.3L V8, the 4.3L offered a lower purchase price and slightly better fuel efficiency, but at the expense of performance. The 4.3L was often seen as a good choice for buyers who primarily used their trucks for commuting and light hauling.
Legacy
The 4.3L EcoTec3 V6 proved to be a relatively reliable engine, with few widespread mechanical issues reported. The 4L60E transmission, while older, was also known for its durability. In the used car market, these Sierra 1500s represent a relatively affordable entry point into full-size pickup ownership. They are often sought after by buyers looking for a dependable work truck or a capable vehicle for recreational use. Maintenance costs are generally reasonable, and parts availability is good. While not as desirable as the V8-powered models, the 4.3L Sierra 1500 remains a viable option for those seeking a practical and affordable pickup truck.
