The heavy-duty Sierras are designed for heavy towing and hauling, not ride comfort and handling. The 2500 and 3500 HD models are offered in two- and four-wheel drive as well as with the dual rear-wheel setup. Multiple bed sizes are offered. The standard engine is a 6.0-liter V8. We tested the 365-hp, 6.6-liter turbodiesel, which produces 660 foot-pounds of torque. It returned 13 mpg overall.
There are 5 recalls on this vehicle. Learn More.
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