The Chevrolet Silverado 2500 HD IV (T1XX) Crew Cab Standard Bed, equipped with the 6.6-liter V8 engine producing 401 horsepower and paired with an automatic transmission, represents a significant iteration in Chevrolet’s heavy-duty truck lineage. Produced from 2020 through 2023, this variant occupied a central position within the fourth generation (T1XX) Silverado 2500/3500 HD lineup, catering to buyers needing substantial towing and payload capacity without opting for the diesel engine’s higher cost and complexity. It was designed to appeal to both commercial users and private owners requiring a robust work truck with comfortable accommodations.
Technical Specifications
| Brand | Chevrolet |
| Model | Silverado 2500 HD |
| Generation | Silverado 2500 HD IV (T1XX) Crew Cab Standard Bed |
| Type (Engine) | 6.6 V8 (401 Hp) Automatic |
| Start of production | 2020 |
| End of production | 2023 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Pick-up |
| Seats | 5 |
| Doors | 4 |
| Fuel Type | Petrol (Gasoline) |
| Weight-to-power ratio | 7.4 kg/Hp, 135.3 Hp/tonne |
| Weight-to-torque ratio | 4.7 kg/Nm, 212.3 Nm/tonne |
| Power | 401 Hp @ 5200 rpm |
| Torque | 629 Nm @ 4000 rpm, 463.93 lb.-ft. @ 4000 rpm |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | L8T |
| Number of cylinders | 8 |
| Engine configuration | V-engine |
| Cylinder Bore | 103.25 mm / 4.06 in. |
| Piston Stroke | 98 mm / 3.86 in. |
| Compression ratio | 10.8:1 |
| Number of valves per cylinder | 2 |
| Fuel injection system | Direct injection |
| Engine aspiration | Naturally aspirated engine |
| Valvetrain | OHV, VVT |
| Engine oil capacity | 7.6 l / 8.03 US qt | 6.69 UK qt |
| Coolant | 15.1 l / 15.96 US qt | 13.29 UK qt |
| Kerb Weight | 2963 kg / 6532.3 lbs. |
| Max. weight | 4604 kg / 10150.08 lbs. |
| Max load | 1641 kg / 3617.79 lbs. |
| Trunk (boot) space – maximum | 1968 l / 69.5 cu. ft. |
| Fuel tank capacity | 136 l / 35.93 US gal | 29.92 UK gal |
| Permitted trailer load with brakes (12%) | 6577 kg / 14499.8 lbs. |
| Length | 6349 mm / 249.96 in. |
| Width including mirrors | 2079 mm / 81.85 in. |
| Height | 2027 mm / 79.8 in. |
| Wheelbase | 4037 mm / 158.94 in. |
| Front track | 1731 mm / 68.15 in. |
| Rear (Back) track | 1736 mm / 68.35 in. |
| Ride height (ground clearance) | 257 mm / 10.12 in. |
| Drivetrain Architecture | Rear wheel drive |
| 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, 355×40 mm |
| Rear brakes | Ventilated discs, 360×34 mm |
| Tires size | 265/70 R17; 245/75 R17; 275/70 R18; 275/65 R20 |
| Wheel rims size | 7.5J x 17; 8J x 18; 8.5J x 20 |
Powertrain & Engine Architecture
The heart of this Silverado 2500 HD variant is the 6.6-liter L8T V8 engine. This engine is a naturally aspirated, gasoline-powered unit featuring direct fuel injection and a robust cast iron block with aluminum cylinder heads. The engine utilizes an overhead valve (OHV) valvetrain with variable valve timing (VVT) to optimize performance and efficiency. The L8T produces 401 horsepower at 5200 rpm and 464 lb-ft of torque at 4000 rpm, providing ample power for towing and hauling. The engine is mated to a six-speed Hydra-Matic automatic transmission, known for its durability and smooth shifting. This transmission is specifically calibrated for heavy-duty applications, with reinforced components to handle the high torque output of the V8 engine.
Driving Characteristics
The 6.6L V8 and six-speed automatic combination delivers a balance of power and usability. While not as quick as lighter-duty trucks or those equipped with the optional diesel engine, the Silverado 2500 HD provides sufficient acceleration for everyday driving and confidently handles heavy loads. The automatic transmission’s gear ratios are optimized for towing, providing strong low-end torque and minimizing the need for frequent downshifts. Compared to manual transmission equipped models, the automatic offers greater convenience, particularly in stop-and-go traffic or when navigating challenging terrain. However, the automatic does result in a slight reduction in fuel economy compared to the manual option.
Equipment & Trim Levels
The Silverado 2500 HD IV (T1XX) Crew Cab Standard Bed with the 6.6L V8 typically came standard with features such as air conditioning, power windows and locks, a basic infotainment system with a touchscreen display, and a rearview camera. Higher trim levels, such as the LT and High Country, added features like leather upholstery, heated and ventilated front seats, a premium sound system, and advanced safety technologies like lane departure warning and automatic emergency braking. Optional extras included a sunroof, navigation system, and various towing packages. The standard bed length offered a practical balance between cargo space and maneuverability.
Chassis & Braking
The Silverado 2500 HD features a fully boxed frame designed for strength and rigidity. The front suspension utilizes an independent torsion bar setup with double wishbone components, providing a comfortable ride and stable handling. 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 even when towing heavy trailers. ABS (Anti-lock Braking System) is standard. Steering is hydraulic, providing a responsive and predictable feel.
Market Reception & Comparison
Critics generally praised the Silverado 2500 HD’s robust construction, comfortable interior, and capable powertrain. The 6.6L V8 was seen as a good option for buyers who didn’t require the higher towing capacity of the diesel engine but still needed a powerful and reliable truck. Fuel economy was a common criticism, as the gasoline V8 is less efficient than the diesel alternative. Compared to the Duramax diesel, the 6.6L V8 offered a lower initial cost but higher long-term fuel expenses. Reliability was generally good, with the L8T engine proving to be a durable and dependable powerplant.
Legacy
The Chevrolet Silverado 2500 HD IV (T1XX) Crew Cab Standard Bed with the 6.6L V8 remains a popular choice in the used truck market. Its combination of power, capability, and relative affordability makes it an attractive option for buyers seeking a heavy-duty truck for work or personal use. The L8T engine is known for its longevity and relatively simple maintenance requirements, contributing to its continued appeal. While newer Silverado HD models offer more advanced technology and features, this generation represents a solid and dependable workhorse that continues to provide years of service.
