(WENY) – General Motors is recalling more than 640,000 pickup trucks because the seat belts could potentially catch the carpet on the floor of the truck on fire.

According to GM, the company uses a “small explosion” to move a piston that tightens the belt before a crash. The explosion can release hot gas through an opening in the bracket, which could possibly set the carpet on fire.

The company says it's received reports of two fires, but no injuries.

The recall covers some 2019 and 2020 Chevy Silverado and GMC Sierra 1500 trucks, as well as some 2020 Silverado and Sierra 2500 and 3500 heavy-duty pickups.

Officials say all the trucks have carpet on the floors and most are in North America.

Once recall notices are issued, GM says dealers will repair the issue at no cost to owners.