The GMC Sierra 1500 V (GMTT1XX) Crew Cab Standard Box, equipped with the 5.3-liter V8 engine and automatic transmission, represents a significant iteration of GMC’s full-size pickup truck. Produced from 2018 to 2021, this variant occupied a central position within the Sierra 1500 lineup, offering a balance between capability, comfort, and affordability. It was part of the fourth generation of the Sierra, known internally as the GMTT1XX platform, which brought substantial improvements in technology, materials, and overall refinement compared to its predecessors. This configuration aimed to appeal to a broad range of buyers, from those needing a robust work truck to families seeking a spacious and versatile vehicle.
Technical Specifications
| Brand | GMC |
| Model | Sierra 1500 |
| Generation | Sierra 1500 V (GMTT1XX) Crew Cab Standard Box |
| Type (Engine) | 5.3 V8 (355 Hp) 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, 6.4 km/l) |
| Fuel consumption (extra urban) | 11.2 l/100 km (21 US mpg, 25.2 UK mpg, 8.9 km/l) |
| Fuel Type | Petrol (Gasoline) |
| Weight-to-power ratio | 6.1 kg/Hp, 164.1 Hp/tonne |
| Weight-to-torque ratio | 4.2 kg/Nm, 239.9 Nm/tonne |
| Power | 355 Hp @ 5600 rpm |
| Power per litre | 66.6 Hp/l |
| Torque | 519 Nm @ 4100 rpm (382.79 lb.-ft. @ 4100 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | L82 |
| 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, VVT DI |
| Coolant Capacity | 12.8 l (13.53 US qt | 11.26 UK qt) |
| Kerb Weight | 2163 kg (4768.6 lbs.) |
| Max. weight | 3129 kg (6898.26 lbs.) |
| Max load | 966 kg (2129.67 lbs.) |
| Fuel tank capacity | 91 l (24.04 US gal | 20.02 UK gal) |
| Permitted trailer load with brakes (12%) | 4355 kg (9601.13 lbs.) |
| Length | 6128 mm (241.26 in.) |
| Width including mirrors | 2063 mm (81.22 in.) |
| Height | 1914 mm (75.35 in.) |
| Wheelbase | 3987 mm (156.97 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, 330×30 mm |
| Rear brakes | Ventilated discs, 345×20 mm |
| Tires size | 255/70 R17; 265/70 R17; 265/65 R18 |
| Wheel rims size | 8.0J x 17; 8.5J x 18 |
Powertrain & Engine Architecture
At the heart of this Sierra 1500 variant lies the 5.3-liter L82 V8 engine. This engine is a member of GM’s Small Block family, known for its durability and relatively simple design. The L82 features direct injection, a significant upgrade from earlier iterations, contributing to improved fuel efficiency and power output. The engine utilizes a cast iron block with aluminum cylinder heads. Valvetrain is an Overhead Valve (OHV) configuration with Variable Valve Timing (VVT) and Direct Injection (DI). This combination allows for a broad torque curve and responsive performance. The engine is paired with a six-speed automatic transmission (likely the 6L80-E), chosen for its robustness and ability to handle the engine’s torque. This transmission features electronically controlled shifting and overdrive for highway cruising.
Driving Characteristics
The 5.3L V8 with the six-speed automatic delivers a comfortable and capable driving experience. While not as quick as the available 6.2-liter V8, the 5.3L provides ample power for everyday driving and towing. The automatic transmission is tuned for smooth shifts and generally avoids hunting for gears. The gear ratios are optimized for both acceleration and fuel economy. In real-world conditions, this setup offers a good balance between power and efficiency. Compared to the available diesel engine, the 5.3L offers quicker acceleration but lower fuel economy, especially when towing. Compared to the 6.2L, it provides a more economical option with slightly reduced performance.
Equipment & Trim Levels
The Sierra 1500 V with the 5.3L engine was available in a variety of trim levels, including SLE, Elevation, and SLT. Standard features typically 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 and ventilated front seats, a premium sound system, and advanced safety technologies like blind-spot monitoring and rear cross-traffic alert. Optional extras included a sunroof, navigation system, and various towing packages.
Chassis & Braking
The Sierra 1500 V utilizes a body-on-frame construction, providing a robust and durable platform. The front suspension consists of independent coil springs, while the rear suspension employs a traditional leaf spring setup. This configuration is designed to handle heavy loads and provide a comfortable ride. Braking duties are handled by ventilated disc brakes on all four wheels. ABS (Anti-lock Braking System) is standard. The rear brakes are slightly smaller in diameter than the front brakes, reflecting the weight distribution of the vehicle. Steering is rack-and-pinion with electric power assist.
Market Reception & Comparison
The GMC Sierra 1500 V with the 5.3L V8 and automatic transmission was generally well-received by critics and consumers. It was praised for its comfortable ride, spacious interior, and capable powertrain. Fuel economy was considered average for a full-size pickup truck. Compared to the Ford F-150 and Ram 1500, the Sierra 1500 offered a similar level of refinement and capability. The 5.3L engine provided a good balance between power and fuel economy, making it a popular choice for buyers who didn’t require the extra power of the 6.2L V8 or the fuel efficiency of the diesel engine.
Legacy
The L82 5.3L V8 engine has proven to be a reliable and durable powertrain. While some owners have reported issues with oil consumption, these are generally not widespread. The six-speed automatic transmission is also known for its reliability. In the used car market, the 2018-2021 GMC Sierra 1500 V with the 5.3L engine remains a popular choice, offering a good value proposition for buyers seeking a capable and comfortable full-size pickup truck. Its blend of practicality, technology, and reliability ensures its continued presence on roadways for years to come.
