The GMC Sierra 1500 V, specifically the Crew Cab Short Box configuration with the 3.0 Duramax Turbo-Diesel engine paired with an automatic transmission, represents a significant offering in the full-size pickup truck segment. Introduced for the 2023 model year as part of the GMTT1XX generation’s facelift, this variant caters to buyers seeking a balance of capability, fuel efficiency, and refined comfort. It slots into the Sierra 1500 lineup as a mid-range option, positioned between the base gasoline engines and the more powerful 6.2-liter V8, appealing to those who prioritize towing capacity and long-distance driving over outright acceleration.
Technical Specifications
| Brand | GMC |
| Model | Sierra 1500 |
| Generation | Sierra 1500 V (GMTT1XX, facelift 2022) Crew Cab Short Box |
| Type (Engine) | 3.0 Duramax TD (305 Hp) Automatic |
| Start of production | 2023 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Pick-up |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (urban) | 9.8 l/100 km (24 US mpg) |
| Fuel consumption (extra urban) | 8.1 l/100 km (29 US mpg) |
| Fuel Type | Diesel |
| Weight-to-power ratio | 7.6 kg/Hp |
| Weight-to-torque ratio | 3.5 kg/Nm |
| Power | 305 Hp @ 3750 rpm |
| Power per litre | 101.7 Hp/l |
| Torque | 671 Nm @ 1500 rpm (494.9 lb.-ft. @ 1500 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | LZ0 |
| Engine displacement | 3000 cm3 (183.07 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | Inline |
| Cylinder Bore | 84 mm (3.31 in.) |
| Piston Stroke | 90 mm (3.54 in.) |
| Number of valves per cylinder | 4 |
| Fuel injection system | Diesel Commonrail |
| Engine aspiration | Turbocharger, Intercooler |
| Valvetrain | DOHC |
| Engine oil capacity | 6.6 l (6.97 US qt | 5.81 UK qt) |
| Coolant capacity | 18.4 l (19.44 US qt | 16.19 UK qt) |
| Kerb Weight | 2327 kg (5130.16 lbs.) |
| Max. weight | 3062 kg (6750.55 lbs.) |
| Max load | 735 kg (1620.4 lbs.) |
| Fuel tank capacity | 83 l (21.93 US gal | 18.26 UK gal) |
| AdBlue tank capacity | 20.5 l (5.42 US gal | 4.51 UK gal) |
| Permitted trailer load with brakes (12%) | 4173 kg (9199.89 lbs.) |
| Length | 5891 mm (231.93 in.) |
| Width | 2063 mm (81.22 in.) |
| Height | 1917 mm (75.47 in.) |
| Wheelbase | 3745 mm (147.44 in.) |
| Ride height (ground clearance) | 200 mm (7.87 in.) |
| Drivetrain Architecture | Rear wheel drive |
| Number of gears and type of gearbox | 10 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 |
| Tires size | 255/70 R17; 265/70 R17; 265/65 R18 |
| Wheel rims size | 8J x 17; 8.5J x 18 |
Powertrain & Engine Architecture
At the heart of this Sierra 1500 variant lies the LZ0 3.0-liter inline-six cylinder Duramax Turbo-Diesel engine. This engine represents a departure from traditional V-style diesel configurations, offering a more compact design. It utilizes a common-rail direct fuel injection system, delivering fuel at extremely high pressures for optimized combustion. The engine also features a variable geometry turbocharger and intercooler, enhancing both power and efficiency. The double overhead camshaft (DOHC) valvetrain, with four valves per cylinder, contributes to improved breathing and overall engine performance. The 10-speed Hydra-Matic automatic transmission is specifically calibrated to work with the diesel engine’s torque curve, providing smooth and efficient gear changes. This transmission allows for a wide gear ratio spread, optimizing both acceleration and fuel economy.
Driving Characteristics
The 305 horsepower and 671 lb-ft of torque produced by the 3.0L Duramax engine translate into impressive towing and hauling capabilities. While not as quick off the line as gasoline-powered Sierra 1500s, the diesel offers a strong and consistent pull throughout the rev range. The 10-speed automatic transmission helps to keep the engine in its optimal power band, even when carrying a load or navigating hilly terrain. The gear ratios are tuned for both everyday driving and heavy-duty tasks. Compared to the 5.3L V8, the diesel provides significantly more low-end torque, making it ideal for towing. However, the V8 offers quicker acceleration. Compared to the 2.7L Turbo, the diesel provides a much more refined and capable experience, albeit at a higher price point.
Equipment & Trim Levels
The Crew Cab Short Box 3.0 Duramax typically comes standard with a robust set of features. These generally include a user-friendly infotainment system with a touchscreen display (typically 8-inch, with larger options available), Apple CarPlay and Android Auto compatibility, and a suite of safety features like automatic emergency braking and lane departure warning. Interior upholstery is typically cloth, with leather options available as upgrades. Higher trim levels, such as the Denali, add premium features like leather seating, wood trim, a premium sound system, and advanced driver-assistance systems. Optional extras often include a power sunroof, heated and ventilated seats, and a trailering package.
Chassis & Braking
The Sierra 1500 utilizes a fully boxed frame for enhanced rigidity and durability. The front suspension features independent coil springs, providing a comfortable ride. The rear suspension employs a traditional leaf spring setup, optimized for load-carrying capacity. Braking duties are handled by ventilated discs on all four wheels, with the front discs measuring 330x30mm and the rear discs at 345x20mm. Anti-lock brakes (ABS) are standard. The chassis is tuned to balance ride comfort with handling stability, even when towing or hauling heavy loads. Stabilizer bars are included to reduce body roll during cornering.
Market Reception & Comparison
The 3.0L Duramax diesel engine has been well-received by critics and consumers alike. It offers a compelling alternative to traditional gasoline engines, providing excellent fuel economy and impressive towing capacity. Fuel economy figures typically range around 24 mpg city and 29 mpg highway, making it a cost-effective choice for long-distance drivers. Compared to the gasoline engines, the diesel variant commands a higher price tag, but the fuel savings and increased capability can offset the initial cost over time. Reliability has been generally good, although diesel engines can be more complex and potentially more expensive to repair than gasoline engines.
Legacy
The LZ0 Duramax engine represents a modern approach to diesel power in full-size trucks. Its inline-six configuration and advanced technologies contribute to both efficiency and performance. As the Sierra 1500 continues to evolve, the 3.0L Duramax is expected to remain a key powertrain option for buyers who prioritize capability and fuel economy. On the used car market, these models are holding their value well, particularly those with lower mileage and well-maintained service records. The combination of GMC’s reputation for durability and the Duramax engine’s proven reliability makes this a desirable option for truck buyers seeking a long-lasting and capable vehicle.
