Chrysler Pacifica class-action lawsuit claims powertrain control module problems cause stalling. June 24, 2018 — A Chrysler Pacifica engine stall lawsuit won't be dismissed after a federal judge ruled minivan owners have provided enough evidence for the proposed class-action lawsuit to proceed. Plaintiffs Ryan and Sarah Wildin filed the Pacifica class-action lawsuit based on alleged defects in 2017-2018 Pacificas that cause the Fiat Chrysler (FCA US) minivans to stall. An alleged error in the powertrain control module (PCM) software causes a loss of engine timing and leads to stalling without warning. In addition, Chrysler allegedly has concealed knowledge of the stalling problems and has been unjustly enriched by keeping customers in the dark. According to the plaintiffs, FCA must have known about the stalling engines because in 2016 and 2017, the automaker issued several software updates for the engine and powertrain control module software.