The GMC Sierra 3500HD III, specifically the facelifted model produced from 2011 to 2014, represented GMC’s heavy-duty pickup truck offering within the GMT900 platform generation. This variant, configured with a Regular Cab, Long Box, and powered by the 6.0-liter Vortec V8 engine paired with an automatic transmission, was a mainstay for buyers needing substantial towing and hauling capacity. Positioned as a work-focused trim, it catered to commercial users, farmers, and individuals requiring a robust truck without the added luxury features of higher-tier Sierra models. The “DRW” designation indicates a Dual Rear Wheel configuration, further enhancing its capabilities.
Technical Specifications
| Brand | GMC |
| Model | Sierra 3500HD |
| Generation | Sierra 3500HD III (GMT900, facelift 2011) Regular Cab Long Box |
| Type (Engine) | 6.0 V8 (360 Hp) DRW Automatic |
| Start of production | 2011 |
| End of production | 2014 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Pick-up |
| Seats | 2 |
| Doors | 2 |
| Fuel Type | Petrol (Gasoline) |
| Weight-to-power ratio | 7.8 kg/Hp, 128.5 Hp/tonne |
| Weight-to-torque ratio | 5.4 kg/Nm, 183.8 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 L96 |
| 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, VVT |
| 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 | 2802 kg, 6177.35 lbs. |
| Max. weight | 6078 kg, 13399.7 lbs. |
| Max load | 3276 kg, 7222.34 lbs. |
| Trunk (boot) space – maximum | 2138 l, 75.5 cu. ft. |
| Fuel tank capacity | 136 l, 35.93 US gal | 29.92 UK gal |
| Permitted trailer load with brakes (12%) | 6396 kg, 14100.77 lbs. |
| Length | 5715 mm, 225 in. |
| Width including mirrors | 2436 mm, 95.91 in. |
| Height | 1966 mm, 77.4 in. |
| Wheelbase | 3369 mm, 132.64 in. |
| Front track | 1748 mm, 68.82 in. |
| Rear (Back) track | 1906 mm, 75.04 in. |
| Ride height (ground clearance) | 224 mm, 8.82 in. |
| Minimum turning circle (turning diameter) | 13.9 m, 45.6 ft. |
| Drivetrain Architecture | The Internal combustion engine (ICE) drives the rear wheels of the vehicle. |
| Drive wheel | 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, 373×34 mm |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Cone worm with recirculation balls |
| Tires size | 235/80 R17; 265/70 R18 |
INTRODUCTION
The 2011-2014 GMC Sierra 3500HD with the 6.0L V8 and automatic transmission was a crucial component of GMC’s heavy-duty truck lineup. Following the GMT900 platform refresh, this model year brought updated styling and improved interior features while retaining the core strengths of the previous generation. The Regular Cab, Long Box configuration, coupled with the Dual Rear Wheel setup, specifically targeted buyers who prioritized maximum payload and towing capacity over passenger comfort or aesthetic refinement. It served as a direct competitor to Ford’s F-350 and Ram’s 3500 series trucks.
Powertrain & Engine Architecture
At the heart of this Sierra 3500HD lay the Vortec L96 6.0-liter V8 engine. This engine, a member of GM’s small-block V8 family, featured a cast iron block and aluminum cylinder heads. It utilized a multi-port fuel injection system, delivering fuel directly to each cylinder. The engine employed an overhead valve (OHV) valvetrain with variable valve timing (VVT) to optimize performance and efficiency across a wider RPM range. The L96 produced 360 horsepower at 5400 rpm and 515 lb-ft of torque at 4200 rpm. This power was channeled through a six-speed Hydra-Matic automatic transmission, known for its durability and smooth shifting. The transmission was specifically tuned for heavy-duty applications, with reinforced components to handle the high torque output of the V8 engine.
Driving Characteristics
The 6.0L V8/automatic combination in the Sierra 3500HD delivered a balance of power and usability. While not as quick as some of the diesel-powered counterparts, the gasoline engine provided ample torque for hauling heavy loads and towing trailers. The automatic transmission offered convenient operation, particularly in stop-and-go traffic or when navigating challenging terrain. The six-speed transmission helped keep the engine in its optimal power band, providing responsive acceleration. Compared to manual transmission versions, the automatic offered less driver involvement but greater ease of use. Compared to the more powerful 6.6L Duramax diesel, this gasoline engine offered a lower initial purchase price but significantly less towing capacity and fuel efficiency.
Equipment & Trim Levels
The Regular Cab, Long Box 3500HD typically came with a relatively basic level of standard equipment, reflecting its work-oriented focus. Standard features generally included air conditioning, a basic audio system, vinyl upholstery, and manual windows and locks. Optional extras included power windows and locks, upgraded audio systems, cruise control, and a trailer brake controller. Interior trim was functional and durable, prioritizing practicality over luxury. The exterior typically featured black plastic bumpers and grille surrounds, further emphasizing its utilitarian nature.
Chassis & Braking
The Sierra 3500HD’s chassis was designed for heavy-duty use. It featured a fully boxed frame for increased rigidity and strength. The front suspension utilized an independent torsion bar setup with double wishbone components, providing a comfortable ride while maintaining stability. The rear suspension employed a traditional leaf spring design, capable of handling substantial payloads. Braking duties were handled by ventilated disc brakes on all four wheels, providing ample stopping power even when heavily loaded. An Anti-lock Braking System (ABS) was standard, enhancing safety and control. The Dual Rear Wheel configuration significantly increased the truck’s stability and load-carrying capacity.
Market Reception & Comparison
Critics generally praised the Sierra 3500HD’s robust construction and impressive towing/hauling capabilities. However, the 6.0L V8/automatic combination was often criticized for its relatively poor fuel economy compared to the diesel options. While the gasoline engine offered a lower initial cost, the long-term operating expenses were typically higher due to fuel consumption. Compared to the Duramax diesel, the 6.0L V8 was seen as a more affordable option for those who didn’t require the ultimate in towing capacity or fuel efficiency. The gasoline engine was favored by buyers who primarily used the truck for lighter-duty tasks or shorter distances.
Legacy
The 2011-2014 GMC Sierra 3500HD with the 6.0L V8 and automatic transmission remains a popular choice in the used truck market. The Vortec L96 engine is known for its reliability and durability, although regular maintenance is crucial to prevent issues such as oil consumption. These trucks are often sought after by individuals and businesses who need a capable and affordable heavy-duty pickup. While newer trucks offer more advanced features and improved fuel economy, the Sierra 3500HD continues to provide a solid and dependable workhorse for those who prioritize capability and value.
