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In the 2003 GMC Sierra 1500 series, the towing capability ranges from 7,900 to 10,200 pounds, depending on the vehicle's features. The tongue rating varies from 990 to 1,020 pounds depending on the options. This Sierra 1500 can carry a payload of 2,783 to 3,094 pounds, exceeding many other half-ton trucks available. This weight capacity considers the passengers' weight too. The GMC Sierra 1500 series is equipped with 260 to 370 pound-feet of torque, based on the options chosen. There are two engine choices for this model.
The 2003 GMC Sierra 1500 comes in 2 different versions with different capacities. The towing capability spans from 9,900 to 10,200 pounds, with a tongue weight of 990 to 1020 pounds. The payload capacity ranges from 2,783 to 3,094 pounds. The engine delivers a torque of 360 pounds-feet at 4,000 rpm.