GMC Sierra 3500HD III (GMT900, facelift 2011) Crew Cab Long Box 6.6 Duramax TD V8 (397 Hp) SRW Automatic


Overall Rating

7.8 / 10
Safety N/A / 5
Not Rated
Engine 3.8 / 5
Value 4.0 / 5
Performance 4.5 / 5
Comfort 3.0 / 5
People\'s Opinion N/A / 5
Not Rated

GMC Sierra 3500HD:

The Chevrolet Silverado is a range of trucks manufactured by General Motors under the Chevrolet brand. Introduced for the 1999 model year, the Silverado is the successor to the long-running Chevrolet C/K model line. Taking its name from the top trim level from the Chevrolet C/K series, the Silverado is offered as a series of full-size pickup trucks, chassis cab trucks, and medium-duty trucks. The fourth generation of the model line was introduced for the 2019 model year.
The Chevrolet Silverado shares mechanical commonality with the identically related GMC Sierra; GMC ended the use of the C/K nomenclature a model generation prior to Chevrolet. In Mexico, high-trim level versions of the Silverado use the Chevrolet Cheyenne name. Competing against the Ford F-Series, Ram pickup, Toyota Tundra, and Nissan Titan, the Silverado is among the best-selling vehicles in the United States, having sold over 12 million trucks since its introduction in 1998 as a 1999 model year....(Read more on Wikipedia)

III (GMT900, facelift 2011) Crew Cab Long Box Overview:

GMC Sierra 3500HD (III (GMT900, facelift 2011) Crew Cab Long Box). With 1037 Nm of torque, it offers ample pulling power. At around 3236 kg, it’s on the heavier side. Rear‑wheel drive offers dynamic handling and sporty feedback. A vehicle with an open cargo bed at the back, suitable for transporting goods. Seating for 5 makes it ideal for daily use.

6.6 Duramax TD V8 (397 Hp) SRW Automatic Verdict:

Rating 4 stars

Performance Verdict

Strong Duramax diesel power for heavy towing and hauling, combined with the added maneuverability of single rear wheels.

Fuel Economy

Good fuel efficiency for a heavy-duty diesel, making it a cost-effective choice for high mileage and consistent heavy loads.

Best Use Case: Heavy towing and hauling on paved roads, commercial use, long-distance travel with large trailers where 4WD isn't essential.

Pros and Cons:

Pros:

  • • Exceptional towing and hauling capacity
  • • Powerful engine options (especially Duramax diesel)
  • • Durable and robust build quality for heavy work
  • • Available 4WD and DRW configurations for maximum capability
  • • Spacious Crew Cab for passengers

Cons:

  • • Poor fuel economy, particularly with the petrol V8
  • • Large size can make maneuvering difficult in urban areas
  • • Ride comfort can be stiff when unladen
  • • Interior might feel utilitarian on lower trims
  • • High running costs (fuel, maintenance for heavy-duty components)

Specifications:

Specifications are compared to those of the previous generation(III (GMT900) Regular Cab Long Box: 2007 - 2010).

General:
Brand:GMC
Model:Sierra 3500HD
Generation:III (GMT900, facelift 2011) Crew Cab Long Box
Modification (Engine):6.6 Duramax TD V8 (397 Hp) SRW Automatic
Start of production:2011
End of production:2013
Powertrain Architecture:Internal Combustion engine
Body type:Pick-up
Seats:5
Doors:4
Engine:
Engine systems:Particulate filter
Power:397 Hp @ 3000 rpm. Same horsepower
Power per litre:60.2 Hp/l [867mm more]
Torque:1037 Nm @ 1600 rpm.
Engine Model/Code:Duramax LML More details about the engine Duramax LML
Engine displacement:6599
Number of cylinders:8
Engine configuration:V-engine
Number of valves per cylinder:4
Fuel injection system:Diesel Commonrail
Engine aspiration:Turbocharger, Intercooler
Valvetrain:OHV
Engine oil capacity:9.5 l
Coolant:24 l
Engine layout:Front, Longitudinal
Cylinder Bore:103 mm mm
Piston Stroke:99 mm mm
Compression ratio:16:1
Maximum engine speed:3000 rpm.
Performance:
Fuel Type:Diesel
Weight-to-power ratio:8.2 kg/Hp, 122.7 Hp/tonne
Weight-to-torque ratio:3.1 kg/Nm, 320.5 Nm/tonne
Space:
Kerb Weight:3236
Max. weight:5171
Max load:1935
Trunk (boot) space - maximum:2138 l
Permitted trailer load with brakes (12%):5897 kg
Fuel tank capacity:136 l
Size:
Length:6581 mm mm [867mm more]
Width:2436 mm mm [Same width.]
Height:1979 mm mm [60mm more]
Wheelbase:4260 mm mm [882mm more]
Width including mirrors:2436 mm
Front track:1748 mm
Rear (Back) track:1709 mm
Ride height (ground clearance):216 mm
Minimum turning circle (turning diameter):16.7 m [above average]
Powertrain:
Drivetrain ArchitectureThe Internal combustion engine (ICE) drives the rear wheels of the vehicle.
Drive wheelRear wheel drive
Number of gears6
Transmission typeAutomatic
Gearbox typeAllison
Front brakesVentilated discs, 355x40 mm [Best for performance and cooling.]
Rear brakesVentilated discs, 373x34 mm [Best for performance and cooling.]
Assisting systemsABS (Anti-lock braking system)
Steering typeCone worm with recirculation balls
Tires size235/80 R17; 265/70 R18
Front suspensionIndependent torsion bar, double wishbone
Rear suspensionRigid axle suspension, Leaf spring

Every driver has a story. What’s yours with the GMC Sierra 3500HD?