WASHINGTON (AP) — General Motors CEO Mary Barra heads back to Capitol Hill today to testify about ignition switch problems on some of the automaker's small cars that are linked to 13 deaths.

Yesterday, Barra acknowledged before a House committee that GM took too long to recall cars with the problem.

Today, Barra appears before a Senate subcommittee. GM has recalled 2.6 million cars since February.

Chrysler is recalling nearly 870,000 Jeep Grand Cherokee and Dodge Durango SUVs. Chrysler says the vehicles made from 2011 through 2014 have brake parts that can corrode, possibly making it harder to stop.

Chrysler says dealers can install for free a shield to protect brake boosters and it'll notify customers that are affected.