Earlier today, we reported how Fiat Chrysler Automobiles was accused of installing defeat devices in roughly 100,000 diesel vehicles to help circumvent emissions standards, a scheme similar to what Volkswagen did in the infamous dieselgate scandal. Now, it’s looking like General Motors is next in line to feel the heat, as a new lawsuit alleges the automaker cheated on more than 700,000 diesel Chevy Silverado and GMC Sierra trucks. This latest allegation makes GM the sixth automaker accused of using cheater software since the dieselgate scandal broke in 2015. Affected vehicles include Duramax Diesel Chevrolet Silverados and GMC Sierras between the 2011 and 2016 model years. The lawsuit is currently seeking class-action status, and was filed in U.S. District Count in Detroit in part by Hagens Berman Sobol Shapiro, the same firm involved in the VW dieselgate suit.