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EDITOR’S NOTE: This is General Motors’ response to a JTA investigation of GM’s role with the Nazis. That was our Dec. 1 cover story.

The series “Hitler’s Carmaker” by Edwin Black examines once again the role of Adam Opel AG, GM’s German subsidiary, in the period before and during World War II.

It has been well documented that, like all German companies, Opel participated in the rebuilding of German industry during the 1930s. As Germany rearmed, Opel sold trucks and other vehicles to the German military, as did all other German vehicle manufacturers.

In independent research supported by GM, historian Henry Ashby Turner, Jr. concluded that GM executives in charge of Opel strove to evade Nazi demands to convert the firm’s main factory for production of dedicated war material. His book “General Motors and the Nazis” (Yale University Press, 2005) documents that by mid-1940, soon after the invasion of Poland, the Nazis had taken complete control of operations at Opel.

It was during this later period, from 1940 though 1945, that the Nazis turned to forced labor to bolster Germany’s manufacturing industry, and that sanctions against Jews and others grew into the horrors of the Holocaust.

During this period, GM had no role in supporting the Nazi regime. In fact, GM became a key part of the American war effort, without which the Nazis might have remained in power for many years longer.

General Motors finds the atrocities committed by the Nazi regime abhorrent and among the darkest days of our collective history. General Motors deeply regrets any role the company or its vehicles played in the Nazi era.

While “Hitler’s Carmaker” makes for compelling reading, it is not news. It covers a period of history that has been extensively researched. For example, following in-depth investigations in 1999, Opel made a $15 million contribution to the German multi-company Trust Fund Initiative to compensate forced labor workers and their survivors.

Nor does it reflect the General Motors of today, which is firmly committed to basic human rights. These principles, spelled out in GM’s Human Rights and Labor Standards, the Global Sullivan Principles and related documents, are proudly supported by the men and women of GM around the globe.