Technical Specifications
| Brand | Chevrolet |
| Model | Silverado 2500 HD |
| Generation | Silverado 2500 HD II (GMT900) Crew Cab Long Box |
| Type (Engine) | 6.0 V8 (360 Hp) 4WD Automatic |
| Start of production | 2007 |
| End of production | 2010 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Pick-up |
| Seats | 5 |
| Doors | 4 |
| Fuel Type | Petrol (Gasoline) |
| Weight-to-power ratio | 7.7 kg/Hp, 129.3 Hp/tonne |
| Weight-to-torque ratio | 5.4 kg/Nm, 184.9 Nm/tonne |
| Power | 360 Hp @ 5400 rpm |
| Power per litre | 60.3 Hp/l |
| Torque | 515 Nm @ 4200 rpm, 379.84 lb.-ft. @ 4200 rpm |
| Maximum engine speed | 6000 rpm |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | Vortec LY6 |
| Engine displacement | 5967 cm3, 364.13 cu. in. |
| Number of cylinders | 8 |
| Engine configuration | V-engine |
| Cylinder Bore | 101.6 mm, 4 in. |
| Piston Stroke | 92 mm, 3.62 in. |
| Compression ratio | 9.6:1 |
| 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 | 15.5 l, 16.38 US qt | 13.64 UK qt |
| Kerb Weight | 2785 kg, 6139.87 lbs. |
| Max. weight | 4173 kg, 9199.89 lbs. |
| Max load | 1388 kg, 3060.02 lbs. |
| Trunk (boot) space – maximum | 2138 l, 75.5 cu. ft. |
| Fuel tank capacity | 129 l, 34.08 US gal | 28.38 UK gal |
| Permitted trailer load with brakes (12%) | 5488 kg, 12098.97 lbs. |
| Length | 6572 mm, 258.74 in. |
| Width including mirrors | 2032 mm, 80 in. |
| Height | 1949 mm, 76.73 in. |
| Wheelbase | 4242 mm, 167.01 in. |
| Front track | 1744 mm, 68.66 in. |
| Rear (Back) track | 1676 mm, 65.98 in. |
| Ride height (ground clearance) | 243 mm, 9.57 in. |
| Minimum turning circle (turning diameter) | 16.8 m, 55.12 ft. |
| Drivetrain Architecture | The Internal combustion engine (ICE) drives the rear wheels permanently, and the front wheels are driven through an electrically or mechanically operated clutch if necessary. |
| Drive wheel | All wheel drive (4×4) |
| Number of gears and type of gearbox | 6 gears, automatic transmission Hydra-Matic |
| Front suspension | Independent torsion bar, double wishbone |
| Rear suspension | Rigid axle suspension, Leaf spring |
| Front brakes | Ventilated discs, 325×38 mm |
| Rear brakes | Ventilated discs, 325×30 mm |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Cone worm with recirculation balls |
| Tires size | 245/75 R16; 265/75 R17 |
| Wheel rims size | 6.5J x 16; 7.5J x 17 |
The Silverado 2500 HD II, built on the GMT900 platform, represented a substantial upgrade over its predecessor. Chevrolet aimed to deliver a heavy-duty truck that didn’t compromise on ride quality or interior comfort. The Crew Cab configuration, with its four full-size doors and spacious rear seating, broadened the truck’s appeal beyond traditional work applications. The 6.0-liter Vortec LY6 V8, paired with a four-speed Hydra-Matic automatic transmission and four-wheel drive, was a popular choice, offering a balance of power and usability for a wide range of tasks.
Powertrain & Engine Architecture
At the heart of this Silverado 2500 HD II lies the Vortec LY6 6.0-liter V8 engine. This engine is a member of Chevrolet’s Vortec family, known for its robust construction and reliable performance. The LY6 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 efficient combustion. The overhead valve (OHV) valvetrain, while traditional, proved to be exceptionally reliable and easy to maintain. The engine produces 360 horsepower at 5400 rpm and 515 lb-ft of torque at 4200 rpm. The four-speed Hydra-Matic 4L80-E automatic transmission was the standard pairing, offering smooth shifts and adequate gear ratios for towing and hauling. While not as technologically advanced as some newer transmissions, the 4L80-E is renowned for its strength and longevity.
Driving Characteristics
The 6.0-liter V8 and four-speed automatic combination provided a solid, if not exhilarating, driving experience. Acceleration was adequate for everyday driving, but the truck’s weight (approximately 6,140 lbs) was always noticeable. The automatic transmission’s gear ratios were optimized for towing and hauling, meaning that initial acceleration wasn’t particularly brisk. However, once underway, the engine delivered ample torque for passing maneuvers and maintaining speed on inclines. Compared to the available 8.1-liter V8, the 6.0-liter offered a more manageable fuel economy, and compared to the Duramax diesel options, it provided a lower initial purchase price. The four-wheel drive system provided enhanced traction in inclement weather and off-road conditions.
Equipment & Trim Levels
The Silverado 2500 HD II Crew Cab Long Box 6.0L 4WD typically came standard with features like air conditioning, power windows and locks, and a basic audio system. The interior typically featured cloth upholstery, though leather was available as an option. Common optional extras included a premium audio system, power-adjustable seats, a navigation system, and a rear vision camera. The Crew Cab configuration offered generous passenger space, making it suitable for families or crews. The Long Box bed provided ample cargo capacity for hauling materials or equipment.
Chassis & Braking
The Silverado 2500 HD II utilized a robust chassis designed to withstand heavy loads. The front suspension featured an independent torsion bar setup with double wishbone components, providing a relatively comfortable ride for a heavy-duty truck. The rear suspension employed a traditional leaf spring design, optimized for load-carrying capacity. Braking duties were handled by ventilated disc brakes on all four wheels, providing adequate stopping power. An anti-lock braking system (ABS) was standard, enhancing safety during emergency braking situations. The steering system utilized a cone worm with recirculation balls, offering a direct and responsive feel.
Market Reception & Comparison
The Silverado 2500 HD II, particularly the 6.0-liter V8/automatic combination, was well-received by truck buyers seeking a capable and comfortable heavy-duty truck. Critics praised its robust construction, spacious interior, and ample towing capacity. Fuel economy, however, was a common criticism, as expected for a vehicle of this size and capability. Compared to the diesel-powered Silverado 2500 HD models, the 6.0-liter V8 offered a lower purchase price but sacrificed fuel efficiency and ultimate towing capacity. The 6.0L was often seen as a good compromise for those who didn’t require the extreme capabilities of the diesel but still needed a powerful and reliable truck.
Legacy
The Silverado 2500 HD II with the 6.0-liter Vortec LY6 engine has proven to be a durable and reliable powertrain. These trucks are still commonly found on the used car market today, often with high mileage but still in good working condition. The Vortec LY6 engine is known for its longevity and relatively simple maintenance requirements. While not the most fuel-efficient option, its robust construction and readily available parts make it a popular choice for those seeking a dependable heavy-duty truck. The GMT900 platform, while superseded by newer designs, remains a respected and capable platform, and the 6.0L/4L80E combination continues to be a favored choice among truck enthusiasts and work vehicle operators.
