(http://media.il.edmunds-media.com/dodge/ram-pickup-1500/2010/ns/2010_dodge_ram-pickup-1500_prf_ns_72312_196.jpg) The National Highway Traffic Safety Administration has opened a probe into an estimated 230,000 2009-'10 Dodge Ram 1500 trucks because the rear differential may fail, resulting in rear wheel lock-up and loss of vehicle control.
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