The most recent GMC Sierra 1500HD Classic model can travel up to 644 miles on the highway and 588 miles in the city with 28 gal tank of gas.
If you drive both in the city and on the highway, the most fuel efficient GMC Sierra 1500HD Classic trim delivers an impressive 22 MPG in the combined mode.
With a wheelbase of 146.1”, this car offers a smooth and comfortable ride, while the 8.1” ground clearance lets you know your limits for off-road adventures.
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