Our friends at PickupTrucks.com have just completed their "HD Hurt Locker" comparison test, in which the GMC Sierra 3500HD, Ford F-350 and Ram 3500 were put through quite a series of tests. PickupTrucks.com editor Mike Levine called it a "grueling showdown among industry heavyweights that included towing 19,000-pound fifth-wheel trailers up and over some of the most demanding grades in the United States."

After seven days of testing, Levine and the rest of the PickupTrucks.com crew found that General Motors' offering, the Sierra HD, was the most capable in this test, outperforming the Ford and Ram trucks.

Read more: http://www.autoblog.com/2011/08/15/g...er-comparison/
Read the test: http://special-reports.pickuptrucks....roduction.html