The company says it is inviting reporters to a 9 a.m. event at its technical center in the Detroit suburb of Warren.
CEO Mary Barra will lead a worldwide employee meeting to discuss the report and hold a news conference afterward. In the afternoon, the company will update industry analysts in a conference call hosted by Barra.
GM has hired former U.S. Attorney Anton Valukas to investigate why it took the company more than 10 years to recall about 2.6 million small cars with faulty ignition switches. The company says the problem has caused at least 13 deaths, but trial lawyers suing GM say the toll is at least 60.
Documents show engineers in the company knew about the problem as early as 2001, yet GM didn't start recalling cars such as the Chevrolet Cobalt and Saturn Ion until February of this year.
Barra has promised that Valukas' investigation will be "unvarnished" and that she will take action on his recommendations.
GM has also hired attorney Kenneth Feinberg to negotiate compensation for families of crash victims. Feinberg told The Associated Press last week that he hasn't settled any cases and won't until GM decides on its options. He said the work is taking longer than he initially expected.
Shares of GM have been higher since trading opened. They were up $1.48, or 4.2 percent, to $36.74 in midday trading Wednesday.