The GMC Sierra 1500 V, specifically the Regular Cab Standard Box configuration powered by the 4.3L V6 engine paired with an automatic transmission, was a mainstay of GMC’s full-size pickup truck lineup from the 2018 to 2021 model years. Representing the GMTT1XX generation, this variant occupied a crucial position as the entry-level offering for buyers prioritizing capability and value in a traditional, no-frills pickup package. It catered to customers needing a work truck or a basic hauler without the added complexity and cost of higher trim levels or extended cab configurations.
Technical Specifications
| Brand | GMC |
| Model | Sierra 1500 |
| Generation | Sierra 1500 V (GMTT1XX) Regular Cab Standard Box |
| Type (Engine) | 4.3 V6 (285 Hp) Automatic |
| Start of production | 2018 |
| End of production | 2021 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Pick-up |
| Seats | 2 |
| Doors | 2 |
| Fuel consumption (urban) | 14.7 l/100 km (16 US mpg, 19.2 UK mpg) |
| Fuel consumption (extra urban) | 11.2 l/100 km (21 US mpg, 25.2 UK mpg) |
| Fuel Type | Petrol (Gasoline) |
| Weight-to-power ratio | 7.2 kg/Hp, 138.7 Hp/tonne |
| Weight-to-torque ratio | 5 kg/Nm, 201 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 | 11.5 l (12.15 US qt | 10.12 UK qt) |
| Kerb Weight | 2055 kg (4530.5 lbs.) |
| Max. weight | 3084 kg (6799.06 lbs.) |
| Max load | 1029 kg (2268.56 lbs.) |
| Permitted trailer load with brakes (12%) | 4536 kg (10000.17 lbs.) |
| Length | 5356 mm (210.87 in.) |
| Width including mirrors | 2063 mm (81.22 in.) |
| Height | 1923 mm (75.71 in.) |
| Wheelbase | 3213 mm (126.5 in.) |
| Drivetrain Architecture | Rear wheel drive |
| 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, 345 mm |
| Rear brakes | Ventilated discs, 360 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 |
| Wheel rims size | 8.0J x 17 |
Powertrain & Engine Architecture
At the heart of this Sierra 1500 variant lies the LV3 4.3L V6 engine. This engine is a member of GM’s small-block V8 family, though configured with six cylinders. It utilizes aluminum cylinder heads and a cast iron block. The LV3 features direct fuel injection, a technology that improves fuel efficiency and power output by injecting fuel directly into the combustion chamber. The overhead valve (OHV) valvetrain, while a more traditional design, contributes to the engine’s durability and relatively simple maintenance requirements. The engine produces 285 horsepower at 5300 rpm and 304.61 lb-ft of torque at 3900 rpm. This power is delivered through a six-speed automatic transmission, chosen for its balance of efficiency and usability. The transmission is electronically controlled, adapting shift points based on driving conditions and throttle input.
Driving Characteristics
The 4.3L V6 and six-speed automatic combination in the Sierra 1500 Regular Cab offered a competent, if not exhilarating, driving experience. Compared to the available 5.3L V8 or the diesel options, the 4.3L provided noticeably less acceleration and overall power. However, it was sufficient for everyday tasks and moderate towing duties. The automatic transmission was tuned for smooth shifts and fuel economy, prioritizing usability over sporty performance. The gear ratios were optimized for hauling and towing, providing adequate torque at lower speeds. While the V8 models offered quicker acceleration and a more robust feel, the 4.3L provided a more economical option for buyers who didn’t require maximum power.
Equipment & Trim Levels
The Regular Cab Standard Box 4.3L Automatic Sierra 1500 typically came with a basic, functional interior. Standard features included cloth upholstery, a basic infotainment system with a touchscreen display, air conditioning, and power windows and locks. Safety features such as ABS and airbags were also standard. Optional extras included upgraded audio systems, a trailer towing package, and various convenience features like keyless entry. The trim level was generally considered the base model, focusing on providing essential features at an affordable price point. It lacked the chrome accents, leather interiors, and advanced technology found in higher trim levels like the SLE or Denali.
Chassis & Braking
The Sierra 1500 V utilized a body-on-frame construction, providing a robust and durable platform for hauling and towing. The front suspension consisted of independent coil springs, offering a comfortable ride. The rear suspension employed a traditional leaf spring setup, designed to handle heavy loads. Braking duties were handled by ventilated disc brakes on all four wheels, providing adequate stopping power for the truck’s weight. The base model typically featured smaller diameter wheels and tires compared to higher trims. The steering system was a rack-and-pinion setup with electric power steering, offering responsive handling and ease of maneuverability.
Market Reception & Comparison
The 4.3L V6 Sierra 1500 was generally well-received as a value-oriented work truck. Critics praised its affordability and fuel efficiency compared to the V8 models. However, some noted its lack of power and refinement. Compared to the 5.3L V8, the 4.3L offered significantly lower fuel economy (around 16 mpg city/21 mpg highway) and slower acceleration. The diesel options provided even better fuel economy and towing capacity, but at a higher price point. The 4.3L appealed to buyers who prioritized cost savings and didn’t require the performance of the larger engines.
Legacy
The LV3 4.3L V6 proved to be a relatively reliable powertrain when properly maintained. Common issues included oil leaks and occasional sensor failures, but these were generally not major concerns. In the used car market, the 2018-2021 Sierra 1500 V with the 4.3L V6 remains an affordable option for buyers seeking a capable and dependable pickup truck. Its simplicity and relatively low maintenance costs make it an attractive choice for those who need a work truck or a basic hauler. While it may not offer the same level of performance or luxury as higher trim levels, it provides a solid foundation for a variety of tasks.
