GMC Sierra 3500HD IV (GMTK2XX) Regular Cab Long Box 6.6 Duramax TD V8 (397 Hp) 4WD SRW Automatic
Overall Rating
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)
IV (GMTK2XX) Regular Cab Long Box Overview:
GMC Sierra 3500HD (IV (GMTK2XX) Regular Cab Long Box). With 1037 Nm of torque, it offers ample pulling power. At around 3193 kg, it’s on the heavier side. All‑wheel drive provides excellent grip, ideal for off‑road use. A vehicle with an open cargo bed at the back, suitable for transporting goods. Seating for 2 makes it ideal for daily use.
6.6 Duramax TD V8 (397 Hp) 4WD SRW Automatic Verdict:
Performance Verdict
Excellent power and torque for a single rear wheel setup, providing robust capability for heavy loads and off-road conditions.
Fuel Economy
Offers commendable fuel efficiency for a heavy-duty 4WD diesel, making it a strong choice for those needing power and range.
Community Verdict
This rating is based on comments found on Reddit, scanned using artificial intelligence, and may not accurately reflect reality.

2.9 / 5
Based on AI analysis of 27 discussions
Read What Owners Say
Pros and Cons:
Pros:
- • Exceptional towing and hauling capabilities, especially with Duramax diesel engines.
- • Robust and durable construction designed for heavy-duty work.
- • Wide range of configurations (4WD/2WD, SRW/DRW) to suit diverse needs.
- • Powerful engine options, including the highly capable Duramax diesel.
- • Spacious interior for a regular cab, with functional controls.
Cons:
- • Gasoline engine fuel economy is poor, particularly under load.
- • Ride comfort can be stiff and truck-like when unladen.
- • Large size makes maneuverability challenging in urban environments.
- • Higher purchase price for diesel variants and top trims.
- • Interior materials, while durable, may lack the refinement of some competitors.
Specifications:
Specifications are compared to those of the previous generation(III (GMT900, facelift 2011) Crew Cab Standard Box: 2011 - 2013).
| General: | |
|---|---|
| Brand: | GMC |
| Model: | Sierra 3500HD |
| Generation: | IV (GMTK2XX) Regular Cab Long Box |
| Modification (Engine): | 6.6 Duramax TD V8 (397 Hp) 4WD SRW Automatic |
| Start of production: | 2015 |
| End of production: | 2017 |
| Powertrain Architecture: | Internal Combustion engine |
| Body type: | Pick-up |
| Seats: | 2 |
| Doors: | 2 |
| Engine: | |
|---|---|
| Engine systems: | Particulate filter |
| Power: | 397 Hp @ 3000 rpm. Same horsepower |
| Power per litre: | 60.2 Hp/l [402mm less] |
| 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: | 22.4 l |
| Engine layout: | Front, Longitudinal |
| Cylinder Bore: | 103 mm mm |
| Piston Stroke: | 99 mm mm |
| Compression ratio: | 16:1 |
| Performance: | |
|---|---|
| Fuel Type: | Diesel |
| Weight-to-power ratio: | 8 kg/Hp, 124.3 Hp/tonne |
| Weight-to-torque ratio: | 3.1 kg/Nm, 324.8 Nm/tonne |
| Space: | |
|---|---|
| Kerb Weight: | 3193 |
| Max. weight: | 5171 |
| Max load: | 1978 |
| Trunk (boot) space - maximum: | 2162 l |
| Permitted trailer load with brakes (12%): | 6577 kg |
| Fuel tank capacity: | 136 l |
| Size: | |
|---|---|
| Length: | 5699 mm mm [402mm less] |
| Width: | 2035 mm mm [3mm more] |
| Height: | 1979 mm mm [13mm more] |
| Wheelbase: | 3393 mm mm [511mm less] |
| Width including mirrors: | 2035 mm |
| Front track: | 1748 mm |
| Rear (Back) track: | 1709 mm |
| Ride height (ground clearance): | 220 mm |
| Minimum turning circle (turning diameter): | 14 m [above average] |
| Powertrain: | |
|---|---|
| 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 (4x4) |
| Number of gears | 6 |
| Transmission type | Automatic |
| Gearbox type | Allison |
| Front brakes | Ventilated discs, 355x40 mm [Best for performance and cooling.] |
| Rear brakes | Ventilated discs, 373x34 mm [Best for performance and cooling.] |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Cone worm with recirculation balls |
| Tires size | 235/80 R17; 265/70 R18 |
| Wheel rims size | 7.5J x 17; 8J x 18 |
| Front suspension | Coil spring, Double wishbone, Transverse stabilizer |
| Rear suspension | Rigid axle suspension, Leaf spring |










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