I happen upon the news yesterday that GM is asking NASA to conduct an independent assessment on if the problem with the ignition key assembly in the affected vehicles can be used safely if a single key is used. Seems GM is trying to find a cheap way out on this ignition key switch problem. From the little bits on the news report what I infer is the switch is susceptible to unintended rotation from drivers that have excessive amount of weight on their key chain. The excessive weight and coupled with the design of the key chain can impart sufficient rotational moment overcoming the detent and cause the ignition switch to rotate out from the normal drive position.
