The GMC Sierra 1500 V, specifically the Double Cab configuration with the 3.0 Duramax Turbo-Diesel engine producing 277 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 as part of the GMTT1XX generation’s facelift in 2022, this variant aimed to provide a balance of capability, fuel efficiency, and refinement for the North American market. It slots into the Sierra 1500 lineup as a mid-range option, appealing to buyers who desire diesel torque for towing and hauling without opting for the higher trims focused on luxury features.
Technical Specifications
| Brand | GMC |
| Model | Sierra 1500 |
| Generation | Sierra 1500 V (GMTT1XX, facelift 2022) Double Cab |
| Type (Engine) | 3.0 Duramax TD (277 Hp) 4WD Automatic |
| Start of production | 2022 |
| End of production | 2022 |
| 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 | 8.6 kg/Hp |
| Weight-to-torque ratio | 3.8 kg/Nm |
| Power | 277 Hp @ 3750 rpm |
| Torque | 623 Nm @ 1500 rpm (459.5 lb.-ft. @ 1500 rpm) |
| Maximum engine speed | 5100 rpm |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | LM2 |
| 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.) |
| Compression ratio | 15:1 |
| 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 | 20.7 l (21.87 US qt | 18.21 UK qt) |
| Kerb Weight | 2395 kg (5280.07 lbs.) |
| Max. weight | 3311 kg (7299.51 lbs.) |
| Max load | 916 kg (2019.43 lbs.) |
| Fuel tank capacity | 83.3 l (22.01 US gal | 18.32 UK gal) |
| AdBlue tank capacity | 20.5 l (5.42 US gal | 4.51 UK gal) |
| Permitted trailer load with brakes (12%) | 5897 kg (13000.66 lbs.) |
| Length | 5891 mm (231.93 in.) |
| Width | 2063 mm (81.22 in.) |
| Width including mirrors | 2478 mm (97.56 in.) |
| Height | 1921 mm (75.63 in.) |
| Wheelbase | 3745 mm (147.44 in.) |
| Ride height (ground clearance) | 205 mm (8.07 in.) |
| Approach angle | 19.2° |
| Departure angle | 23.9° |
| Ramp-over (brakeover) angle | 19.4° |
| Drivetrain Architecture | All wheel drive (4×4) |
| Number of gears and type of gearbox | 10 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 |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| 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 GM LM2 3.0-liter inline-six cylinder Duramax turbo-diesel engine. This engine represents a departure from traditional V-configuration diesel engines, offering a more compact design. The LM2 utilizes a high-pressure common rail direct fuel injection system, delivering fuel directly into the cylinders at extremely high pressures for optimized combustion. A variable geometry turbocharger (VGT) with an intercooler enhances both low-end torque and overall power output. The engine also features a DOHC (Dual Overhead Camshaft) valvetrain with four valves per cylinder, contributing to improved breathing and efficiency. The 10-speed automatic transmission, a collaboration between General Motors and Ford, provides a wide range of gear ratios, optimizing the engine’s power delivery for both towing and fuel economy. This transmission is electronically controlled and features driver-selectable modes.
Driving Characteristics
The 277 horsepower and 459.5 lb.-ft. of torque produced by the LM2 engine translate to capable performance in real-world driving conditions. While not as overtly powerful as the larger gasoline V8 options available in the Sierra 1500 lineup, the Duramax provides ample torque for towing trailers, hauling heavy loads, and navigating challenging terrain. The 10-speed automatic transmission helps keep the engine in its optimal power band, providing smooth and responsive shifts. Compared to a gasoline engine, the diesel offers a flatter torque curve, meaning consistent pulling power across a wider range of RPMs. The automatic transmission, while convenient, may not offer the same level of driver engagement as a manual transmission, but it contributes to a more relaxed driving experience, particularly in stop-and-go traffic.
Equipment & Trim Levels
The 3.0 Duramax Diesel Double Cab typically came standard with features such as a touchscreen infotainment system with Apple CarPlay and Android Auto compatibility, keyless entry, and a rearview camera. Higher trim levels, such as the SLE and AT4, added features like leather upholstery, heated and ventilated front seats, a premium sound system, and advanced safety technologies like adaptive cruise control and lane departure warning. Optional extras included a power sunroof, a bed liner, and various towing packages. The interior design generally focused on functionality and durability, with materials chosen to withstand the demands of truck ownership.
Chassis & Braking
The Sierra 1500’s chassis is a body-on-frame construction, providing a robust foundation for hauling and towing. The front suspension utilizes an independent coil spring setup, offering a comfortable ride, while the rear suspension employs a traditional leaf spring design, optimized for load-carrying 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 Double Cab configuration offers a comfortable passenger cabin with ample space for five adults. The four-wheel drive system provides enhanced traction in various weather conditions and off-road situations.
Market Reception & Comparison
The 3.0 Duramax Diesel Sierra 1500 received generally positive reviews from automotive critics. It was praised for its fuel efficiency, strong towing capacity, and refined driving experience. Compared to the gasoline-powered Sierra 1500 models, the diesel offered significantly better fuel economy, particularly during highway driving. However, the diesel engine carried a higher initial cost. Compared to other diesel-powered full-size trucks, such as the Ford F-150 Power Stroke and the Ram 1500 EcoDiesel, the Sierra 1500 Duramax offered a competitive combination of power, efficiency, and features.
Legacy
The LM2 Duramax engine has proven to be a relatively reliable powertrain, with reports of long-term durability. The 10-speed automatic transmission has also demonstrated good reliability. In the used car market, the 2022 GMC Sierra 1500 Double Cab 3.0 Duramax Diesel holds its value well, appealing to buyers seeking a capable and efficient full-size pickup truck. Regular maintenance, including oil changes and filter replacements, is crucial for ensuring the longevity of this powertrain. The combination of diesel torque and modern technology makes this Sierra 1500 variant a compelling option for those who require a versatile and dependable truck.
