Full 2012 GMC Sierra 2500HD Review
What's New for 2012
The 2012 GMC Sierra 2500HD receives only a few minor upgrades following a major redesign last year. Highlights of the latter are a hard-drive-based navigation system and heated/ventilated seats for upper trim levels.
Introduction
In the General Motors family, GMC is positioned as the truck division. And although GMC Sierras are essentially twins under the skin with their Chevrolet Silverado relatives, GMC's pickups are nonetheless heavy hitters. The 2012 GMC Sierra 2500HD in particular is a slugger among some very tough competitors.
Although it might not look as if the Sierra has changed much since 2007, it has been upgraded steadily over the years. Last year brought a number of substantial improvements that included a stronger, fully boxed frame, a revised suspension, a more powerful turbodiesel engine (an option) and a new Allison transmission. They all added up to a more comfortable ride, better performance and handling dynamics and higher hauling/towing capacities. Speaking of the turbodiesel, it's rated at an impressive 397 horsepower and 765 pound-feet of torque, which of course translates into serious work potential that includes a maximum towing capacity approaching 17,000 pounds.
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