The latest reports point to a shift elimination at Detroit-Hamtramck and temporary shutdowns at other factories.
General Motors has reportedly expanded its plans to reduce production volume as inventory for many models continues to grow.
The company will eliminate the second shift at its Detroit-Hamtramck plant, resulting in layoffs for 1,192 workers, according to a Detroit News report citing Worker Adjustment and Retraining Notification Act filings.
A spokesperson told the AP the company plans to temporarily halt production at five assembly plants for up to three weeks next month. The decision affects 10,000 workers at factories in Michigan, Kansas, Ohio and Kentucky.
GM's inventory is said to have grown to 874,000 vehicles by the end of November, representing an increase of 182,000 vehicles compared to the same period last year. The figure is believed to represent the highest level since the company went bankrupt in the 2008 industry crisis.