The GMC Sierra 1500 V (GMTT1XX) Crew Cab Standard Box, equipped with the 4.3L V6 engine and 4WD automatic transmission, was a popular configuration within the Sierra 1500 lineup produced from 2018 to 2021. This variant represented a balance between capability, fuel efficiency, and affordability, targeting buyers who needed a full-size pickup for both work and personal use but didn’t require the higher performance or premium features of the larger engine options. It occupied a mid-range position in the Sierra 1500 family, slotting below the 5.3L and 6.2L V8 models, and often served as a more accessible entry point into the full-size truck segment.
Technical Specifications
| Brand | GMC |
| Model | Sierra 1500 |
| Generation | Sierra 1500 V (GMTT1XX) Crew Cab Standard Box |
| Type (Engine) | 4.3 V6 (285 Hp) 4WD Automatic |
| Start of production | 2018 |
| End of production | 2021 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Pick-up |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (urban) | 15.7 l/100 km (15 US mpg, 18 UK mpg) |
| Fuel consumption (extra urban) | 11.8 l/100 km (19.9 US mpg, 23.9 UK mpg) |
| Fuel Type | Petrol (Gasoline) |
| Weight-to-power ratio | 7.9 kg/Hp, 126.4 Hp/tonne |
| Weight-to-torque ratio | 5.5 kg/Nm, 183.2 Nm/tonne |
| Power | 285 Hp @ 5300 rpm |
| Power per litre | 66.3 Hp/l |
| Torque | 413 Nm @ 3900 rpm (304.61 lb.-ft. @ 3900 rpm) |
| Maximum engine speed | 5800 rpm |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | LV3 |
| Engine displacement | 4301 cm3 (262.46 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 | 11.5 l (12.15 US qt | 10.12 UK qt) |
| Kerb Weight | 2254 kg (4969.22 lbs.) |
| Max. weight | 3221 kg (7101.09 lbs.) |
| Max load | 967 kg (2131.87 lbs.) |
| Fuel tank capacity | 91 l (24.04 US gal | 20.02 UK gal) |
| Permitted trailer load with brakes (12%) | 3357 kg (7400.92 lbs.) |
| Length | 6128 mm (241.26 in.) |
| Width including mirrors | 2063 mm (81.22 in.) |
| Height | 1915 mm (75.39 in.) |
| Wheelbase | 3987 mm (156.97 in.) |
| Drivetrain Architecture | All wheel drive (4×4). ICE drives rear wheels, front wheels engaged via clutch. |
| Number of gears and type of gearbox | 6 gears, automatic transmission |
| 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 | 255/70 R17; 265/70 R17; 265/65 R18 |
| Wheel rims size | 8.0J x 17; 8.5J x 18 |
INTRODUCTION
The GMC Sierra 1500 V, specifically the Crew Cab Standard Box configuration with the 4.3L V6 engine and four-wheel drive, debuted in 2018 as part of the GMTT1XX generation. This generation represented a significant update for the Sierra 1500, bringing with it updated styling, improved technology, and enhanced safety features. The 4.3L V6/4WD Automatic combination was positioned as a value-oriented option, appealing to buyers who prioritized practicality and affordability over outright performance. It was a common sight in both fleet and personal use, offering a capable and reliable workhorse for a wide range of tasks.
Powertrain & Engine Architecture
The heart of this Sierra 1500 variant is the 4.3L (262 cubic inch) LV3 V6 engine. This engine is a member of GM’s EcoTec3 family, known for its aluminum block construction and direct injection technology. The LV3 utilizes a 60-degree V-angle and features a variable valve timing system to optimize performance and fuel efficiency. The direct injection system delivers fuel directly into the combustion chamber, improving combustion efficiency and reducing emissions. The engine produces 285 horsepower at 5300 rpm and 305 lb-ft of torque at 3900 rpm. The engine is paired with a six-speed automatic transmission (6L80) designed to provide smooth and efficient shifting. This transmission is known for its durability and ability to handle the torque output of the V6 engine. 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 4.3L V6-powered Sierra 1500 offers a comfortable and capable driving experience, though it doesn’t deliver the same level of acceleration as the V8 models. The six-speed automatic transmission is well-tuned, providing adequate gear ratios for everyday driving and towing. The truck feels responsive enough for typical commuting and hauling tasks, but passing maneuvers on the highway require more planning. The 4WD system provides excellent traction in inclement weather and off-road conditions. Compared to the 5.3L V8, the 4.3L offers noticeably less power, resulting in slower acceleration and a lower towing capacity. However, the V6 is more fuel-efficient, making it a better choice for drivers who prioritize economy. The suspension is tuned for a balance of ride comfort and load-carrying capability, providing a reasonably smooth ride even when the truck is loaded.
Equipment & Trim Levels
The 4.3L V6/4WD Automatic Sierra 1500 was typically offered in SLE, Elevation, and AT4 trim levels. Standard features generally included air conditioning, power windows and locks, a touchscreen infotainment system with Apple CarPlay and Android Auto compatibility, and a rearview camera. Higher trim levels added features such as leather upholstery, heated seats, a premium sound system, and advanced safety technologies like lane departure warning and automatic emergency braking. Optional extras included a sunroof, navigation system, and a trailering package. The interior design was functional and well-built, with comfortable seating and intuitive controls.
Chassis & Braking
The Sierra 1500 utilizes a fully boxed frame for enhanced strength and rigidity. The front suspension features independent coil springs, while the rear suspension employs a traditional leaf spring setup. This configuration provides a good balance of ride comfort and load-carrying capacity. Braking duties are handled by ventilated disc brakes on all four wheels. The ABS (Anti-lock Braking System) helps to maintain control during hard braking situations. 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 affordable full-size pickup. Reviewers praised its fuel efficiency and comfortable ride, but noted that its performance was not as impressive as the V8 models. Compared to the 5.3L V8, the 4.3L offered better fuel economy (around 1-2 mpg combined) but significantly less power and towing capacity. The 4.3L was also often more affordable to purchase and maintain. Against competitors like the Ford F-150 with its 3.5L EcoBoost V6, the Sierra 1500 4.3L offered a more traditional truck experience, with a focus on simplicity and reliability.
Legacy
The 4.3L V6 engine and 6L80 transmission have proven to be relatively reliable powertrains. While not without their occasional issues (such as oil leaks and transmission shudder), these components are generally durable and capable of providing years of service with proper maintenance. In the used car market, the 2018-2021 Sierra 1500 4.3L V6/4WD Automatic represents a good value proposition for buyers seeking a capable and affordable full-size pickup. Its combination of practicality, fuel efficiency, and reliability makes it a popular choice for both work and personal use. The GMTT1XX generation Sierra 1500, and this variant in particular, helped solidify GMC’s position as a premium truck brand.
