CEO Barra: GM to start compensating ignition switch victims

General Motors CEO Mary Barra speaks during a news conference prior to the company's annual shareholder meeting in Detroit, Tuesday, June 10, 2014. Barra says a thorough review of safety issues at the company hasn't turned up any more serious problems. (AP Photo/Paul Sancya)

General Motors Co expects to begin processing victims' claims related to faulty ignition switches by Aug. 1, Chief Executive Officer Mary Barra will tell the U.S. Congress on Wednesday.

In prepared testimony to be delivered to the House of Representatives Energy and Commerce Committee, Barra also will say that Kenneth Feinberg, who is overseeing the creation of a compensation fund, will have "full authority to establish eligibility criteria for victims and determine compensation levels."

The defective ignition switches in older model Chevrolet Cobalts, Saturn Ions and other GM models have been linked to at least 13 deaths.