Q. I have a 2009 Chevy Cobalt. The car was running but had some fault codes, one being a faulty ignition switch. I replaced the switch and did a key relearn, and now the car will not crank or start.

General Motors said last week that it was recalling more than 700,000 vehicles because of a problem with the ignition switch. GM said six people had been killed in accidents. But CBS News has learned ...