Federal safety regulators fined General Motors $28,000 on Tuesday, saying it had not provided much of the information requested for an investigation into a recall of about 2.6 million cars with an ignition switch defect that G.M. has linked to 13 deaths.
The National Highway Traffic Safety Administration on March 4 demanded answers to 107 questions related to why G.M. waited until February to start recalling the cars, even though it had been alerted to the problem as early as 2001. The cars contain a faulty ignition switch that is prone to turn off while driving, shutting off the engine and disabling the air bags.