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GMC Sierra 1500 III (GMT900) Regular Cab Long Box 5.3 Vortec V8 (320 Hp) Automatic FlexFuel
Overall Rating
GMC Sierra 1500:
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 Starting with the LT trim. Standard and "Custom" trims are still called Silverado. 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) Regular Cab Long Box Overview:
GMC Sierra 1500 (III (GMT900) Regular Cab Long Box). With 461 Nm of torque, it offers ample pulling power. At around 2155 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 3 makes it ideal for daily use.
5.3 Vortec V8 (320 Hp) Automatic FlexFuel Verdict:
Performance Verdict
Excellent power and torque for heavy towing and hauling, offering strong acceleration and responsive performance for a full-size truck.
Fuel Economy
Typical for a large V8 truck; FlexFuel capability adds versatility but does not significantly improve overall fuel economy.
Pros and Cons:
Pros:
- • Powerful and reliable Vortec V8 engine options
- • High towing and hauling capacity
- • Robust and durable GMT900 platform
- • Spacious regular cab for its class
- • Available FlexFuel and 4WD options for versatility
Cons:
- • Poor fuel economy across all V8 engines
- • Large size can be cumbersome in urban environments and parking
- • Basic interior materials on lower trims
- • Stiff ride quality, typical for a heavy-duty truck with leaf springs
- • Limited rear passenger space (Regular Cab configuration)
Specifications:
Specifications are compared to those of the previous generation(II (GMT800): 2002 - 2007).
| General: | |
|---|---|
| Brand: | GMC |
| Model: | Sierra 1500 |
| Generation: | III (GMT900) Regular Cab Long Box |
| Modification (Engine): | 5.3 Vortec V8 (320 Hp) Automatic FlexFuel |
| Start of production: | 2007 |
| End of production: | 2010 |
| Powertrain Architecture: | Internal Combustion engine |
| Body type: | Pick-up |
| Seats: | 3 |
| Doors: | 2 |
| Engine: | |
|---|---|
| Power: | 320 Hp @ 5200 rpm. Same horsepower |
| Power per litre: | 60.1 Hp/l [541mm more] |
| Torque: | 461 Nm @ 4200 rpm. |
| Engine Model/Code: | LMG More details about the engine LMG |
| Engine displacement: | 5328 |
| Number of cylinders: | 8 |
| Engine configuration: | V-engine |
| Number of valves per cylinder: | 2 |
| Fuel injection system: | Multi-port manifold injection |
| Engine aspiration: | Naturally aspirated engine |
| Valvetrain: | OHV |
| Engine oil capacity: | 5.7 l |
| Coolant: | 14.1 l |
| Engine layout: | Front, Longitudinal |
| Cylinder Bore: | 96.01 mm mm |
| Piston Stroke: | 91.95 mm mm |
| Compression ratio: | 9.9:1 |
| Maximum engine speed: | 6000 rpm. |
| Performance: | |
|---|---|
| Fuel Type: | Petrol / Ethanol - E85 |
| Fuel consumption (economy) - urban: | 16.8 l/100 km |
| Fuel consumption (economy) - extra urban: | 11.8 l/100 km |
| Weight-to-power ratio: | 6.7 kg/Hp, 148.5 Hp/tonne |
| Weight-to-torque ratio: | 4.7 kg/Nm, 213.9 Nm/tonne |
| Space: | |
|---|---|
| Kerb Weight: | 2155 |
| Max. weight: | 2903 |
| Max load: | 748 |
| Trunk (boot) space - maximum: | 2138 l |
| Permitted trailer load with brakes (12%): | 4536 kg |
| Fuel tank capacity: | 128 l |
| Size: | |
|---|---|
| Ramp-over (brakeover) angle: | 21.5° |
| Length: | 5702 mm mm [541mm more] |
| Width: | 2031 mm mm [37mm more] |
| Height: | 1867 mm mm [59mm more] |
| Wheelbase: | 3378 mm mm [355mm more] |
| Width including mirrors: | 2031 mm |
| Front track: | 1730 mm |
| Rear (Back) track: | 1702 mm |
| Ride height (ground clearance): | 208 mm |
| Minimum turning circle (turning diameter): | 15.4 m [above average] |
| Approach angle: | 16° |
| Departure angle: | 24.1° |
| Powertrain: | |
|---|---|
| Drivetrain Architecture | The Internal combustion engine (ICE) drives the rear wheels of the vehicle. |
| Drive wheel | Rear wheel drive |
| Number of gears | 6 |
| Transmission type | Automatic |
| Gearbox type | Hydra-Matic |
| Front brakes | Disc, 330x30 mm [bad for performance and cooling.] |
| Rear brakes | Drum, 295x60 mm [bad for performance and cooling.] |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Tires size | 245/70 R17 |
| Wheel rims size | 7.5J x 17 |
| Front suspension | Independent coil spring |
| Rear suspension | Rigid axle suspension, Leaf spring |
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