Recently freshened, the HD Sierras (and its Silverado twin) are designed for heavy towing and hauling, and ride stiffer than the Sierra 1500.
The standard engine is a 6.0-liter V8.
The 397-hp, 6.6-liter turbodiesel produced a whopping 765 foot-pounds of torque and could haul close to a 2,500-pound payload.
The diesel is punchy but noisy, and the Allison-made six-speed automatic is smooth.
Alerts
There are 3 recalls on this vehicle.
Learn More.