Four General Motors assembly plants in the U.S. and Canada will be closed temporarily due to supply chain disruptions caused by last week’s earthquakes in Japan.

The automaker announced today that four plants — Spring Hill, Tennessee; Lordstown, Ohio; Fairfax, Kansas; and Oshawa, Ontario — will be idled for two weeks starting on April 25. (Read More…)

Ford is adding a week of production at most of its North American factories this year for an additional 40,000 vehicles, Reuters says. Plants will be idled for just one week this summer instead of the traditional two. (Read More…)