RBC Capital Markets analyst Joseph Spak estimated that one-eighth of GM’s full-sized pickups have diesel engines,
and said "negative publicity" from the lawsuit could steer prospective buyers to Ford Motor Co or Fiat Chrysler’s Ram division.
According to the lawsuit, "on-road" emissions testing conducted for the plaintiffs found
that Duramax-engined trucks produced nitrogen oxide pollutants two to five times higher than allowed, and "many times" higher than gasoline-engined trucks.
(Reuters) - General Motors Co was accused in a lawsuit on Thursday of rigging hundreds of thousands of diesel
trucks with devices similar to those used by Volkswagen AG, to ensure they pass emissions tests.
It said GM used at least three "defeat devices" to ensure
that the trucks met federal and state emission standards, even if they generated more pollution in real-world driving.
They said they would not have bought, or would have paid less for, their respective 2011 Sierra
and 2016 Silverado trucks had they known about the alleged rigging
They include Mercedes-Benz parent Daimler AG, Fiat Chrysler Automobiles NV, Peugeot SA and Renault SA
GM shares were down 74 cents, or 2.2 percent, at $32.46 in afternoon trading, after earlier falling as much as 3.8 percent.