U.S. automaker Chrysler announced a recall of 44,300 Ram 1500 and Dakota vehicles due to a rear axle pinion nut that may come loose, regulators said. The National Highway Traffic Safety Administration said the recall would begin in November. The recall involves 2009-2010 Ram 1500 and Dodge Dakota trucks made between July 1, 2009 and Nov. 30, 2009. The NHTSA said a loose rear axle pinion nut could result in a crash \"with little warning,\" to the driver. Chrysler said it would install a pinion nut retainer free of charge. Consumers can call 888-327-4236 for information.