Comparison GMC Sierra 3500HD V (GMTT1XX) Regular Cab Long Bed 6.6 V8 (401 Hp) 4WD DRW Automatic & GMC Sierra 2500HD III (GMT900, facelift 2011) Crew Cab Long Box 6.6 Duramax TD V8 (397 Hp) Automatic
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| Brand: | GMC | GMC |
| Model: | Sierra 3500HD | Sierra 2500HD |
| Generation: | Sierra 3500HD V (GMTT1XX) Regular Cab Long Bed | Sierra 2500HD III (GMT900, facelift 2011) Crew Cab Long Box |
| Engine / modification: | 6.6 V8 (401 Hp) 4WD DRW Automatic | 6.6 Duramax TD V8 (397 Hp) Automatic |
| Production start: | 2020 year | 2011 year |
| Production end: | 2023 year | 2014 year |
| Coupe type: | Pick-up | Pick-up |
| Powertrain Architecture: | Internal Combustion engine | Internal Combustion engine |
| Num. of Doors: | 2 | 4 |
| Num. of seats: | 2 | 5 |
| Fuel Type: | Petrol (Gasoline) | Diesel |
| Fuel tank volume: | 136 l | 136 l |
| Power: | 401 hp | 397 hp |
| Max power in: | 5200 rpm. | 3000 rpm. |
| Torque: | 629 Nm @ 4000 rpm. | 1037 Nm @ 1600 rpm. |
| Model Engine: | L8T | Duramax LML |
| Engine displacement: | 6599 cm3 | |
| Engine oil capacity: | 7.6 l | 9.5 l |
| Coolant: | 14.6 l | 24 l |
| Maximum engine speed: | 3000 rpm. | |
| Aspiration / Turbine: | Naturally aspirated engine | |
| Valvetrain: | OHV, VVT | OHV |
| Number of cylinders: | 8 | 8 |
| Number of valves per cylinder: | 2 | 4 |
| Compression ratio: | 10.8 | 16 |
| Piston Stroke: | 98 mm | 99 mm |
| Cylinder Bore: | 103.25 mm | 103 mm |
| Wheel Drive: | All wheel drive (4x4) | Rear wheel drive |
| Length: | 5982 mm | 6581 mm |
| Width including mirrors: | 2457 mm | 2032 mm |
| Height: | 2038 mm | 1984 mm |
| Wheelbase: | 3595 mm | 4018 mm |
| Front track: | 1731 mm | 1748 mm |
| Rear (Back) track: | 1905 mm | 1709 mm |
| Ride height(clearance): | 266 mm | 211 mm |
| Maximum amount of Luggage (trunk): | 2138 l | |
| Front suspension: | Independent torsion bar, double wishbone | |
| Max weight: | 6350 kg | 4536 kg |
| Kerb Weight: | 3092 kg | 3206 kg |
| Steering type: | Cone worm with recirculation balls | Cone worm with recirculation balls |
| Power steering: | Hydraulic Steering | |
| Minimum turning circle (turning diameter): | 16.7 m | |
| Permitted trailer load with brakes (12%): | 7620 kg | 5897 kg |
| Tire size: | 265/70 R17; 245/75 R17; 275/70 R18 | 245/75 R17; 265/70 R17; 265/70 R18; 265/60 R20 |
| Wheel rims size: | 7.5J x 17; 8J x 18 | 7.5J x 17; 8J x 18; 8.5J x 20 |