The GMC Sierra 1500 V, specifically the Crew Cab Short Box configuration with the 3.0 Duramax Turbo-Diesel engine producing 305 horsepower and paired with a 10-speed automatic transmission and four-wheel drive, represents a significant offering in the full-size pickup truck segment. Introduced for the 2023 model year as part of the GMTT1XX platform’s refreshed lineup, this variant aims to balance capability, fuel efficiency, and refinement for the American truck buyer. It slots into the Sierra 1500 range as a mid-to-upper tier option, appealing to those seeking diesel torque without the expense or complexity of the larger 6.6L Duramax engine.
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) 4WD Automatic |
| Start of production | 2023 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Pick-up |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (urban) | 10.7 l/100 km (22 US mpg) |
| Fuel consumption (extra urban) | 8.7 l/100 km (27 US mpg) |
| Fuel Type | Diesel |
| Weight-to-power ratio | 8 kg/Hp |
| Weight-to-torque ratio | 3.6 kg/Nm |
| Power | 305 Hp @ 3750 rpm |
| 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 | 2440 kg (5379.28 lbs.) |
| Max. weight | 3252 kg (7169.43 lbs.) |
| Max load | 812 kg (1790.15 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%) | 4037 kg (8900.06 lbs.) |
| Length | 5891 mm (231.93 in.) |
| Width | 2063 mm (81.22 in.) |
| Height | 1918 mm (75.51 in.) |
| Wheelbase | 3745 mm (147.44 in.) |
| Ride height (ground clearance) | 205 mm (8.07 in.) |
| Drivetrain Architecture | All wheel drive (4×4). ICE drives rear wheels, front wheels engaged via clutch. |
| 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
The heart of this Sierra 1500 variant is the LZ0 3.0-liter inline-six cylinder Duramax turbo-diesel engine. This engine represents a departure from the traditional V8 diesel offerings in the American full-size truck market, providing a more efficient and refined alternative. 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 (VGT) and an intercooler to maximize power and torque while minimizing emissions. The DOHC valvetrain with four valves per cylinder contributes to improved breathing and overall engine efficiency. The 10-speed Hydra-Matic automatic transmission is specifically tuned to work with the diesel engine’s torque curve, providing smooth and efficient shifts. This transmission offers a wide gear ratio spread, optimizing both acceleration and fuel economy.
Driving Characteristics
The 305 horsepower and 671 lb-ft of torque delivered by the 3.0L Duramax, combined with the 10-speed automatic, results in a driving experience that prioritizes usability and towing capability. While not as overtly powerful as the larger 6.6L Duramax or gasoline-powered V8 options, this configuration provides ample power for everyday driving and hauling. The torque is readily available from low RPMs, making it ideal for towing trailers or navigating challenging terrain. The 10-speed transmission keeps the engine in its optimal power band, minimizing the need for frequent downshifts. Compared to the 2.7L Turbo, the 3.0L diesel offers significantly more torque, making it a better choice for those who regularly tow or haul heavy loads. The automatic transmission, while smooth, may not offer the same level of driver engagement as a manual transmission, but it simplifies operation and reduces driver fatigue.
Equipment & Trim Levels
The 3.0L Duramax engine was typically offered on SLE, Elevation, and Denali trim levels of the Sierra 1500. Standard features on these trims generally include an 8-inch touchscreen infotainment system with Apple CarPlay and Android Auto compatibility, keyless entry, and a suite of safety features such as automatic emergency braking and lane departure warning. Higher trim levels, like the Denali, add premium features such as leather upholstery, heated and ventilated seats, a premium sound system, and advanced driver-assistance systems. Optional extras include a larger touchscreen display, a head-up display, and a power-adjustable steering column.
Chassis & Braking
The Sierra 1500 utilizes a fully boxed frame construction for enhanced rigidity and durability. The front suspension features independent coil springs, while the rear suspension employs a traditional leaf spring setup. This configuration provides a comfortable ride while maintaining a respectable payload capacity. Braking duties are handled by ventilated disc brakes on all four wheels, providing ample stopping power. ABS (Anti-lock Braking System) is standard. The specific brake rotor sizes (330x30mm front, 345x20mm rear) are tailored to the vehicle’s weight and performance characteristics. The four-wheel drive system offers various modes, including 2WD, 4WD High, and 4WD Low, allowing drivers to adapt to different driving conditions.
Market Reception & Comparison
The 3.0L Duramax Sierra 1500 received generally positive reviews from automotive critics. It was praised for its fuel efficiency, smooth ride, and ample torque. Compared to the gasoline-powered V8 options, the diesel engine offered significantly better fuel economy, particularly during highway driving. However, some critics noted that the diesel engine was more expensive than the gasoline engines and that the engine noise was more noticeable. Compared to other diesel-powered trucks in the segment, such as the Ford F-150 Power Stroke and the Ram 1500 EcoDiesel, the Sierra 1500 offered a competitive combination of performance, fuel economy, and refinement.
Legacy
The 3.0L Duramax engine has proven to be a reliable and durable powertrain. While early model years experienced some minor issues with the diesel particulate filter (DPF), these were largely addressed through software updates. On the used car market, Sierra 1500s equipped with the 3.0L Duramax engine tend to hold their value well, due to their fuel efficiency and reputation for reliability. The engine’s relatively simple design and robust construction contribute to its long-term durability, making it a popular choice for buyers seeking a capable and efficient full-size pickup truck.
