WASHINGTON - Lawmakers on Capitol Hill accused General Motors of a potentially criminal cover-up of its defective ignition switches and fumed at the lack of answers from its new CEO during a second day of hearings Wednesday into why GM waited a decade to recall cars with the deadly flaw.
Members of a Senate subcommittee also said GM should tell owners of the 2.6 million cars being recalled to stop driving them until they are repaired. But CEO Mary Barra gave assurances that the cars, mainly Chevrolet Cobalts and Saturn Ions, are safe to use while owners wait for the replacement part, saying she would let her own son get behind the wheel if he took certain precautions.
GM has linked the switch to 13 deaths and dozens of accidents. Others, including relatives of some victims, have a higher count of fatalities.
The automaker has said the ignition switch can move from the "run" position to the "accessory" position because of weight on the key chain. That causes the engine to shut off, disabling power steering, power brakes and the front air bags.
As she did Tuesday at a House hearing, Barra said many of the answers Congress is seeking will come out in an internal GM investigation that should be completed in 45 to 60 days. She also said she was unaware of certain details about GM's handling of the problem - an assertion that frustrated some of the senators.
"You don't know anything about anything," Sen. Barbara Boxer, D-Calif., bristled.
Barra also tried to assure lawmakers that GM is now more focused on safety and the consumer. Few sounded convinced.
"If this is the new GM leadership, it's pretty lacking," Boxer said.
Senators aggressively questioned Barra about how GM approved a replacement switch in 2006 but never changed the part number. Failing to change the number makes the part harder to track. In this case, anyone investigating the cars wouldn't know why earlier switches were failing at a higher rate than later ones.
While Barra called the failure to change the part number "unacceptable," several members of the panel implied that it was done intentionally by a person or group within the company.
"I don't see this as anything but criminal," said Sen. Kelly Ayotte, R-N.H., a former prosecutor.
Sen. Richard Blumenthal, D-Conn., who is also a former prosecutor, told Barra that the more he learns about GM, "the more convinced I am that GM has a real exposure to criminal liability."
The Justice Department is conducting a criminal investigation of GM's handling of the recall. Barra promised the company will cooperate.