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GMC Sierra Specifications

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GMC Sierra Specifications

The GMC Sierra is a full-size truck offered in 1500 and higher-capacity towing and payload configurations.

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Vehicle specifications

GMC Sierra

Key specifications

Transmission

4- to 10-speed manual or automatic

Seating capacity

2 to 6 depending on cab

Engine displacement

2.5 to 6.6 L

Fuel type

Petrol or diesel

Fuel tank or battery

60–136 L

Cylinders

4, 6 or 8 cylinders

Drivetrain

Rear- or four-wheel drive

Generations and model years

Generation: Early generations
Model years: 1918–1998
Notes: GMC full-size trucks evolved from the C/K family into the Sierra.

Generation: First Sierra generation
Model years: 1999–2006

Detailed specifications

Engine and performance

Engine type: Petrol V6/V8 or Duramax diesel engines
Displacement: 2.5 to 6.6 L
Cylinders: 4, 6 or 8 cylinders
Maximum power: Approximately 120–470 hp
Maximum torque: Approximately 260–1,330 Nm

These are reference specifications across different generations, trims and markets. A vehicle in Sudan may differ by model year, engine, trim and import market. Verify the individual vehicle using its VIN or original brochure.

Source: Official GMC vehicle lineup Current GMC vehicle lineup Hummer EV specifications guide Official GMC newsroom

Notes

GMT800 platform with V6/V8 engines and multiple cab configurations.

Generation: Second to fourth generations
Model years: 2007–2026
Notes: Payload and cab choices expanded with Duramax engines and modern towing technology.

Fuel

Petrol or diesel

Transmission and drivetrain

Transmission: 4- to 10-speed manual or automatic
Drivetrain: Rear- or four-wheel drive
Steering: Electric or hydraulic power steering

Dimensions and capacity

Dimensions: 5,300–6,350 × 1,880–2,080 mm
Wheelbase: 3,120–4,030 mm
Ground clearance: 180–290 mm
Tank or battery: 60–136 L

Suspension and brakes

Suspension: Independent front suspension and solid rear axle with coils or leaf springs
Brakes: Ventilated front/rear discs depending on payload

GMC Sierra Specifications | SUDAN AUTO