The GMC Sierra 1500 IV (GMTK2XX) Crew Cab Short Box, equipped with the 4.3 EcoTec3 V6 engine and a four-wheel-drive automatic transmission, represents a significant iteration in GMC’s full-size pickup truck lineage. Produced from 2013 through 2015, this variant occupied a key position in the Sierra 1500 lineup, offering a balance between capability, fuel efficiency, and affordability. It was part of the fourth generation of the Sierra 1500, designated GMTK2XX, which brought substantial improvements in design, technology, and overall refinement compared to its predecessors. This particular configuration, with its FlexFuel capability, was aimed at buyers seeking a versatile truck for both work and personal use.
Technical Specifications
| Brand | GMC |
| Model | Sierra 1500 |
| Generation | Sierra 1500 IV (GMTK2XX) Crew Cab Short Box |
| Type (Engine) | 4.3 EcoTec3 V6 (285/297 Hp) 4WD Automatic FlexFuel |
| Start of production | 2013 |
| End of production | 2015 |
| 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 | 8.2 kg/Hp |
| Weight-to-torque ratio | 5.6 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) |
| Coolant capacity | 14 l (14.79 US qt) |
| Kerb Weight | 2331 kg (5138.98 lbs.) |
| Max. weight | 3220 kg (7098.88 lbs.) |
| Max load | 889 kg (1959.91 lbs.) |
| Trunk (boot) space – minimum | 1512 l (53.4 cu. ft.) |
| Fuel tank capacity | 98 l (25.89 US gal) |
| Permitted trailer load with brakes (12%) | 3039 kg (6699.85 lbs.) |
| Length | 5829 mm (229.49 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 | 17.1° |
| Departure angle | 23.2° |
| Ramp-over (brakeover) angle | 19.0° |
| Drivetrain Architecture | 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 |
INTRODUCTION
The 2013-2015 GMC Sierra 1500 Crew Cab Short Box with the 4.3 EcoTec3 V6 and 4WD automatic transmission was positioned as a mainstream offering within the Sierra 1500 range. It slotted below the more powerful 5.3L and 6.2L V8 options, appealing to buyers who prioritized fuel economy and a lower price point without sacrificing significant towing and hauling capacity. The Crew Cab configuration provided ample interior space for passengers, making it suitable for families and those needing to transport multiple occupants regularly. The GMTK2XX platform, shared with Chevrolet Silverado models, represented a move towards greater refinement and capability for GM’s light-duty trucks.
Powertrain & Engine Architecture
The heart of this Sierra 1500 variant is the 4.3L (262 cubic inch) EcoTec3 V6 engine, designated LV3. This engine is a naturally aspirated, direct-injected powerplant featuring a 60-degree V-angle. Direct injection allows for precise fuel delivery, improving efficiency and power output. The engine utilizes an overhead valve (OHV) valvetrain with two valves per cylinder. A key feature of the EcoTec3 family is Active Fuel Management (AFM), or cylinder deactivation, which shuts down two cylinders under light load conditions to further enhance fuel economy. The engine produces 285 horsepower at 5300 rpm and 305 lb-ft of torque at 3900 rpm. When running on E85 fuel, power increases to 297 horsepower. The engine is mated to a six-speed Hydra-Matic automatic transmission, known for its smooth shifting and durability. This transmission was specifically tuned to complement the V6 engine’s torque curve, providing adequate acceleration and towing capability.
Driving Characteristics
The 4.3L V6-powered Sierra 1500 offers a noticeably different driving experience compared to its V8 siblings. While it doesn’t deliver the same level of raw power or acceleration, it provides sufficient performance for everyday driving and moderate towing needs. The automatic transmission is well-geared, offering smooth and predictable shifts. The 4WD system provides enhanced traction in inclement weather or off-road conditions. Compared to the 5.3L V8, the 4.3L feels less strained during acceleration, but requires more planning when overtaking or climbing hills. The gear ratios are optimized for fuel efficiency, which can sometimes result in the engine feeling slightly underpowered at highway speeds, particularly when fully loaded. The overall driving experience is comfortable and refined, thanks to the improved suspension and chassis design of the GMTK2XX platform.
Equipment & Trim Levels
The 4.3L Sierra 1500 typically came standard with a respectable array of features. Base models included air conditioning, power windows and locks, a tilt steering wheel, and a basic audio system. Higher trim levels, such as SLE and SLT, added features like leather upholstery, heated seats, a premium audio system, a navigation system, and a rearview camera. The Crew Cab configuration offered generous passenger space, with comfortable seating for five adults. Optional extras included a trailer brake controller, a locking rear differential, and various appearance packages.
Chassis & Braking
The GMTK2XX Sierra 1500 features an independent coil spring front suspension and a rigid axle rear suspension with leaf springs. This setup provides a good balance between ride comfort and load-carrying capacity. The braking system consists of ventilated disc brakes on all four wheels, providing adequate stopping power. Anti-lock brakes (ABS) are standard. The frame is fully boxed for increased strength and rigidity. The 4WD system utilizes an electronically controlled transfer case, allowing the driver to switch between two-wheel drive and four-wheel drive modes as needed.
Market Reception & Comparison
The 4.3L Sierra 1500 was generally well-received by critics as a capable and fuel-efficient option in the full-size truck segment. It offered a compelling alternative to the V8 models, particularly for buyers who didn’t require the maximum towing or hauling capacity. Fuel economy was a key selling point, with the 4.3L consistently outperforming the V8 engines in real-world testing. However, some reviewers noted that the engine could feel underpowered when fully loaded or when towing heavy trailers. Compared to competitors like the Ford F-150 with its EcoBoost V6 engines, the Sierra 1500’s 4.3L engine offered a more traditional driving experience.
Legacy
The 4.3L EcoTec3 V6 has proven to be a relatively reliable powertrain, with few widespread issues reported. The Hydra-Matic transmission is also known for its durability. In the used car market, these Sierra 1500s represent a good value proposition, offering a capable and comfortable truck at a reasonable price. The cylinder deactivation system has been known to experience issues in some cases, but these are typically addressed with routine maintenance. Overall, the 2013-2015 GMC Sierra 1500 Crew Cab Short Box with the 4.3 EcoTec3 V6 remains a popular choice for buyers seeking a versatile and dependable full-size pickup truck.
