GM recalls some cars with problematic switches

General Motors Co last month recalled millions of vehicles with three different designs of ignition switches that could accidentally turn off the engine and disable air bags in a crash. But the automaker has concluded that more than 2 million other vehicles having exactly the same switches are safe. The vehicles which have not been recalled include fullsize crossovers such as the Buick Enclave and Chevrolet Traverse made from 2007 to the present, which share a switch with recalled late-model Chevrolet Camaros and Cadillac CTSs. Two other switch designs are in other sets of vehicles. GM spokesman Alan Adler said that factors including the kinds of suspension used in different vehicles could explain why a switch that accidentally turned off in one type would not turn off in another, but he said there was no single reason, according to Reuters.