The National Highway Traffic Safety Administration said on its website that the front-seat belt webbing may not be secured properly to a lap belt anchor on the side of the seat near the doors.
The recall affects Impalas from the 2009 and 2010 model years. GM said 303,100 vehicles are in the United States and more than 19,000 are in Canada.
GM said in a statement that it did not know of any injuries or deaths connected to the recall. The Detroit automaker told NHTSA that it had received 32 warranty reports with the seat belt conditions through mid-August.
Dealers will inspect how the belts are anchored. The will reinstall the anchors if needed at no cost to the owners.
Owners will be notified later this month and can contact Chevrolet at 1-800-630-2438.