G.M. Recalling 54,700 Vehicles Because of Roll-Away Danger General Motors is recalling almost 54,700 of its 2013 trucks and sport utility vehicles because of a roll-away danger, according to a report the automaker filed Friday with the National Highway Traffic Safety Administration. The action covers the Cadillac Escalade, Escalade ESV and Escalade EXT; Chevrolet Avalanche, Express, Silverado (1500 and heavy duty), Suburban and Tahoe; GMC Savana, Sierra (1500 and heavy duty) and the Yukon and Yukon XL. All are 2013 models. The automaker told the safety agency it had learned that the vehicles could have one of several mechanical maladies: It is possible to shift the automatic transmission out of Park without the key being in the ignition. It is possible to shift the automatic transmission out of Park when the key is in the ignition, but in the off position. It is possible to shift the automatic transmission out of Park when the key is in the off position without pressing the brake pedal. It is possible to remove the key from the ignition without the transmission being in Park. Under federal safety regulations intended to prevent vehicles from rolling it should be impossible to do any of those things. The automaker said the problem was discovered in mid-December at the assembly plant. Alan Adler, a G.M. spokesman, wrote in an e-mail that the automaker was not aware of any accidents or injuries. He also said most of the recalled vehicles were on dealer lots and would be fixed before being sold.