2014 GMC Sierra 2500HD Road Test - Consumer Reports
The HD Sierra is designed for heavy towing and hauling, and rides more stiffly than the Sierra 1500. The standard engine is a 6.0-liter V8. Our tested 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 2 recalls on this vehicle. Learn More.
GMC Sierra 2500HD Road Test

The HD Sierra is designed for heavy towing and hauling, and rides more stiffly than the Sierra 1500. The standard engine is a 6.0-liter V8. Our tested 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. Braking and handling capabilities come close to matching the Sierra 1500's. Handling is not agile but has a modicum of responsiveness that other three-quarter-ton trucks don't provide. Reliability of the turbodiesel version has improved to average. A redesign based on the new Sierra has been announced.

Change Vehicle