The GMC Sierra 1500 IV (GMTK2XX) Regular Cab Standard Box, equipped with the 5.3 EcoTec3 V8 engine and a 4WD automatic transmission, represents a significant iteration in GMC’s full-size pickup truck lineage. Produced from 2013 through 2015, this configuration occupied a sweet spot in the Sierra 1500 lineup, offering a balance of capability, fuel efficiency (enhanced by FlexFuel capability), and affordability. It was positioned as a workhorse option, appealing to buyers who needed the strength of a full-size truck without the premium price tag of higher trim levels or more powerful engine options.
Technical Specifications
| Brand | GMC |
| Model | Sierra 1500 |
| Generation | Sierra 1500 IV (GMTK2XX) Regular Cab Standard Box |
| Type (Engine) | 5.3 EcoTec3 V8 (355/380 Hp) 4WD Automatic FlexFuel |
| Start of production | 2013 |
| End of production | 2015 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Pick-up |
| Seats | 3 |
| Doors | 2 |
| 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 kg/Hp, 166.3 Hp/tonne |
| Weight-to-torque ratio | 4.1 kg/Nm, 243.1 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 | 2135 kg (4706.87 lbs.) |
| Max. weight | 3084 kg (6799.06 lbs.) |
| Max load | 949 kg (2092.19 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%) | 4217 kg (9296.89 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.) |
| Approach angle | 15.2° |
| Departure angle | 24.9° |
| Ramp-over (brakeover) angle | 24.1° |
| 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; 265/65 R17 |
| Wheel rims size | 8J x 17 |
INTRODUCTION
The fourth-generation GMC Sierra 1500 (GMTK2XX platform) represented a significant leap forward for GMC’s truck offerings. Introduced for the 2014 model year, it boasted improved styling, a more refined interior, and a suite of new technologies. The 5.3L EcoTec3 V8 with the 4WD automatic configuration was a popular choice, offering a balance between power and efficiency. This particular variant, the Regular Cab Standard Box, catered to buyers prioritizing functionality and affordability over luxury and space. It served as a reliable work truck, capable of handling demanding tasks while remaining relatively economical to operate.
Powertrain & Engine Architecture
At the heart of this Sierra 1500 lies the L83 5.3-liter EcoTec3 V8 engine. This engine is characterized by its aluminum cylinder heads and block, direct fuel injection, and active fuel management (cylinder deactivation) system. The direct injection system, coupled with a relatively high 11:1 compression ratio, contributes to both power and efficiency. The overhead valve (OHV) valvetrain, while a more traditional design, proved robust and reliable. The engine produces 355 horsepower at 5600 rpm and 382.79 lb-ft of torque at 4100 rpm. When running on E85 fuel, output increases to 380 horsepower and 433 lb-ft of torque. The Hydra-Matic 6L80 six-speed automatic transmission was the sole transmission option for this configuration. This transmission is known for its smooth shifting and durability, offering a good balance of performance and fuel economy. The 4WD system is a traditional part-time system, allowing the driver to switch between two-wheel drive and four-wheel drive as needed.
Driving Characteristics
The 5.3L V8 and 6L80 automatic combination delivers adequate, though not exhilarating, performance. Acceleration is sufficient for everyday driving and towing, but it won’t win any drag races. The automatic transmission is tuned for smooth shifts and fuel efficiency, sometimes at the expense of responsiveness. Compared to the available 6.2L V8, this engine feels noticeably less powerful, especially when fully loaded or towing. However, it offers a significant fuel economy advantage. The Regular Cab configuration, combined with the standard box length, provides a comfortable and manageable driving experience. The 4WD system provides enhanced traction in slippery conditions, making it suitable for a variety of terrains.
Equipment & Trim Levels
The base-level Sierra 1500 Regular Cab Standard Box typically came standard with features like air conditioning, power windows and locks, a basic audio system, and vinyl upholstery. Optional extras included features like a CD player, upgraded audio systems, power seats, and a trailering package. The interior was functional and durable, prioritizing practicality over luxury. Higher trim levels, such as the SLE and SLT, added features like leather upholstery, heated seats, and more advanced infotainment systems. However, the base model focused on providing essential features at an affordable price point.
Chassis & Braking
The GMTK2XX platform features a fully boxed frame, providing a solid foundation for the truck. The front suspension utilizes independent coil springs, while the rear suspension employs a traditional leaf spring setup. This configuration provides a comfortable ride and good load-carrying capacity. Braking duties are handled by ventilated disc brakes on all four wheels, with ABS (Anti-lock Braking System) standard. The rear brakes are slightly smaller in diameter than the front brakes. The steering system is a rack-and-pinion setup with electric power steering, providing responsive and precise handling.
Market Reception & Comparison
The 2013-2015 GMC Sierra 1500 with the 5.3L V8 and automatic transmission was generally well-received by critics. It was praised for its comfortable ride, spacious cabin, and improved fuel economy compared to previous generations. However, some critics noted that the interior materials were not as upscale as those found in some competitors. Compared to the 6.2L V8-equipped Sierra, the 5.3L offered a more affordable entry point and better fuel economy, but at the cost of performance. The 1.8L and 1.9 TDI versions of the VW Golf were not direct competitors, but the Sierra 1500 was often compared to other full-size trucks like the Ford F-150 and Ram 1500.
Legacy
The L83 5.3L EcoTec3 V8 has proven to be a relatively reliable engine, with many examples exceeding 200,000 miles with proper maintenance. The 6L80 automatic transmission is also known for its durability. On the used car market, these Sierra 1500s represent a good value, offering a capable and reliable truck at an affordable price. Common issues include oil leaks and occasional sensor failures, but these are generally not major concerns. The combination of capability, affordability, and reliability has made this Sierra 1500 a popular choice among truck buyers for years to come.
