U.S. Environmental Protection Agency

GM denies allegations that it cheats on diesel emissions

GM denies allegations that it cheats on diesel emissions

General Motors on Thursday denied allegations made in a lawsuit that the company's full-size diesel pickup trucks cheat on emissions tests.

The lawsuit filed by lawyers for two truck owners in U.S. District Court in Detroit alleges that trucks with Duramax diesel engines have three devices on them that are rigged to allow more pollution on the road than during treadmill tests in the Environmental Protection Agency laboratory.

But GM called the allegations “baseless” and said in a statement it would vigorously defend itself.

“The Duramax Diesel Chevrolet Silverado and GMC Sierra comply with all U.S. EPA and CARB (California Air Resources Board) emissions regulations,” the...

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