General Motors CEO Mary Barra is scheduled to testify on April 1 to a U.S. House of Representatives panel investigating defective ignition switches in GM vehicles, the committee said on Thursday.
The defect in some GM cars has been linked to 12 deaths and is being investigated by Congress, which last week asked the automaker and federal regulator to provide details of the steps they took to get unsafe cars off the road.
(Read more: This opens Pandora's Box for GM: Nardelli)
Barra is expected to testify to the panel's Oversight and Investigations Subcommittee hearing on Tuesday, April 1, 2014, at 11:00 a.m, a press release from the energy and commerce committee said.
National Highway Traffic Safety Administration Acting Administrator (NHTSA) David Friedman is expected to testify on the same day.
"We look forward to hearing from both Mary Barra and Administrator Friedman. Their testimony is critical to understanding what the company and NHTSA knew about the safety problems, when they knew it, and what was done about it," said committee Chairman Fred Upton and Oversight and Investigations Subcommittee Chairman Tim Murphy in a statement.
(Read more: GM issues another massive recall)
GM announced a recall in February covering over 1.6 million vehicles around the world to correct the problems. Reports suggest drivers first complained of the safety defects over 10 years ago.
The automaker was hit with a lawsuit last Friday from customers who said their vehicles lost value because of ignition problems that prompted the car recall.
— Follow us on Twitter @CNBCWorld