Detroit automakers say they have seen delays with federal emissions testing of new pickup trucks from the U.S. Environmental Protection Agency due to the federal shutdown, reports The Detroit News.

Fiat Chrysler Automobiles has gained certification for its 2019 Ram 2500 but the federal shutdown has suspended certification of the Ram 3500, CEO Mike Manley told the media outlet. General Motors said it's waiting for certification for "a number of model-year 2020 vehicles." Ford Motor Co. declined comment.

While automakers reported the delays, the EPA told the outlet it "has not significantly delayed any certification application."

The partial shutdown has also impacted the National Highway Traffic Safety Administration, which has paused its regulation of vehicle recalls and is not posting updates on its website.