The GMC Sierra 1500 III, specifically the Crew Cab Short Box configuration equipped with the 6.2-liter Vortec V8 engine and a four-wheel-drive automatic transmission, represents a significant iteration in GMC’s full-size pickup truck lineage. Produced from 2009 to 2013 (GMT900 platform), this variant aimed to deliver a blend of robust capability, comfortable interior space, and modern technology within the highly competitive American truck market. The Crew Cab configuration, with its four full-size doors, prioritized passenger comfort, making it a popular choice for families and those needing to transport multiple occupants alongside work-related cargo. This particular trim, powered by the 6.2L V8, positioned itself as a step up from the base engine options, offering increased performance for towing and hauling.
Technical Specifications
| Brand | GMC |
| Model | Sierra 1500 |
| Generation | Sierra 1500 III (GMT900) Crew Cab Short Box |
| Type (Engine) | 6.2 Vortec V8 (403 Hp) 4WD Automatic FlexFuel |
| Start of production | 2009 |
| End of production | 2013 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Pick-up |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (urban) | 19.6 l/100 km (12 US mpg) |
| Fuel consumption (extra urban) | 12.4 l/100 km (19 US mpg) |
| Fuel Type | Petrol / Ethanol – E85 |
| Power | 403 Hp @ 5700 rpm |
| Torque | 565 Nm @ 4300 rpm (416.72 lb.-ft. @ 4300 rpm) |
| Maximum engine speed | 6000 rpm |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | L9H |
| Engine displacement | 6162 cm3 (376.03 cu. in.) |
| Number of cylinders | 8 |
| Engine configuration | V-engine |
| Cylinder Bore | 103.25 mm (4.06 in.) |
| Piston Stroke | 92 mm (3.62 in.) |
| Compression ratio | 10.5:1 |
| Number of valves per cylinder | 2 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Naturally aspirated engine |
| Valvetrain | OHV |
| Engine oil capacity | 5.7 l (6.02 US qt | 5.02 UK qt) |
| Coolant capacity | 11.9 l (12.57 US qt | 10.47 UK qt) |
| Max. weight | 3175 kg (6999.68 lbs.) |
| Trunk (boot) space – maximum | 1506 l (53.18 cu. ft.) |
| Fuel tank capacity | 98 l (25.89 US gal | 21.56 UK gal) |
| Length | 5844 mm (230.08 in.) |
| Width including mirrors | 2031 mm (79.96 in.) |
| Height | 1875 mm (73.82 in.) |
| Wheelbase | 3645 mm (143.5 in.) |
| Ride height (ground clearance) | 229 mm (9.02 in.) |
| Minimum turning circle | 14.4 m (47.24 ft.) |
| Approach angle | 15.3° |
| Departure angle | 22.4° |
| Ramp-over angle | 19.3° |
| Drivetrain Architecture | All wheel drive (4×4) |
| Number of gears and type of gearbox | 6 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 | Drum, 295×60 mm |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Tires size | 265/70 R17 |
| Wheel rims size | 7.5J x 17 |
Powertrain & Engine Architecture
At the heart of this Sierra 1500 variant lies the 6.2-liter Vortec L9H V8 engine. This engine is a member of the Vortec family, known for its robust construction and relatively simple design. The L9H features a cast iron block and aluminum cylinder heads, contributing to its durability. It utilizes a multi-port fuel injection system, delivering fuel directly to each cylinder for optimized combustion. The overhead valve (OHV) valvetrain, while not as technologically advanced as overhead cam designs, proved reliable and cost-effective. The engine’s 10.5:1 compression ratio and careful tuning allowed it to produce 403 horsepower and 417 lb-ft of torque. The engine is also FlexFuel capable, meaning it can run on gasoline or a blend of up to 85% ethanol (E85). Paired with the engine is a six-speed Hydra-Matic automatic transmission. This transmission offered smooth shifting and helped to optimize the engine’s power delivery for both everyday driving and demanding tasks like towing.
Driving Characteristics
The 6.2L V8 and six-speed automatic combination provided a noticeable step up in performance compared to the Sierra 1500’s smaller engine options. Acceleration was brisk, and the truck felt capable in a variety of driving situations. The automatic transmission was well-tuned, providing smooth and predictable shifts. While not as fuel-efficient as the smaller engines, the 6.2L offered a satisfying level of power for towing trailers, hauling heavy loads, or simply enjoying a more responsive driving experience. The four-wheel-drive system provided enhanced traction in inclement weather or off-road conditions. Compared to a manual transmission equipped Sierra, the automatic offered convenience, but at the expense of some driver control and potentially slightly reduced fuel economy.
Equipment & Trim Levels
The Crew Cab Short Box 6.2L 4WD Sierra 1500 typically came standard with features like air conditioning, power windows and locks, a CD player with auxiliary input, and a basic information display. Higher trim levels, such as the SLT and Denali, added features like leather upholstery, heated seats, a premium sound system, navigation, and a rear-seat entertainment system. Optional extras included a sunroof, upgraded wheels, and various towing packages. The interior design was functional and comfortable, with a focus on durability and ease of use. The Crew Cab configuration offered ample space for passengers in both the front and rear seats.
Chassis & Braking
The GMT900 platform utilized a fully boxed frame for enhanced rigidity and strength. The front suspension featured independent coil springs, providing a comfortable ride and good handling. The rear suspension employed a traditional leaf spring setup, which was well-suited for carrying heavy loads. Braking duties were handled by ventilated discs up front and drum brakes in the rear. An anti-lock braking system (ABS) was standard, enhancing safety during emergency braking situations. The steering system was a rack-and-pinion setup with power assist, providing precise and responsive steering feel.
Market Reception & Comparison
The 6.2L Sierra 1500 was generally well-received by critics and consumers alike. It was praised for its powerful engine, comfortable ride, and spacious interior. However, its fuel economy was a common criticism, especially compared to smaller engine options and competing trucks. Compared to the 5.3L V8, the 6.2L offered significantly more power, but at a higher price point and with lower fuel efficiency. The 6.2L also provided a more compelling alternative to diesel-powered trucks for those who didn’t require the diesel’s exceptional towing capacity but desired a powerful gasoline engine.
Legacy
The GMT900 Sierra 1500, particularly the 6.2L V8 variant, has proven to be a relatively reliable truck in the used car market. The Vortec engine is known for its durability, and the six-speed automatic transmission has also held up well over time. However, like any vehicle, regular maintenance is crucial to ensure long-term reliability. Common issues include oil leaks, sensor failures, and wear and tear on suspension components. Today, these trucks remain popular among those seeking a capable and comfortable full-size pickup at a reasonable price. The 6.2L engine continues to be a desirable feature, offering a good balance of power, reliability, and affordability.
