DETROIT — General Motors is recalling more than 10,000 full-size vans in the U.S. and Canada because the fuel filler pipes can rust, leak and cause fires.

The recall affects Chevrolet Express and GMC Savana vans from the 2003 and 2004 model years with left-side cargo doors. It covers vans sold in 20 states, Washington, D.C., and in Canada, where salt and chemicals are used to clear snow from roads.

GM said today salt and chemicals can get trapped in a conduit that covers the fuel filler pipe and cause corrosion. Gasoline may leak and cause a fire. The company said it doesn’t know of any fires or injuries from the problem.

GM dealers will fix the problem free of charge. Dealers are expected to be notified in October when parts become available. GM said in documents filed with the National Highway Traffic Safety Administration that owners already have been sent letters detailing special repair coverage for the problem. Owners know to take their vans to dealers if a leak develops.

The vans were sold in all 50 states, but the recall affects only those sold or registered in Canada and the following states: Connecticut, Delaware, Illinois, Indiana, Iowa, Maine, Maryland, Massachusetts, Michigan, Minnesota, Missouri, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, Vermont, West Virginia and Wisconsin.

Owners with questions can call Chevrolet at (866) 694-6546 and GMC at (866) 996-9463.