GM has issued a Special Coverage bulletin relating to a fix for a condition in which 2016 to 2018 Chevy Volt PHEVs may have a malfunctioning battery energy control module or BECM, potentially leading ...

Let’s start by looking at the evolution of the GM High Energy Ignition (HEI) system. This system became available as an option in 1974 and was standard in all 1975-and-later vehicles, with the ...

Newly revealed emails seen by The Wall Street Journal and other news organizations appear to show that automaker General Motors ordered a half-million replacement ignition switches nearly two months ...

The demands for better emissions and fuel economy in the mid 1970s necessitated leaner fuel mixtures. These leaner mixtures required greater voltage and more spark to ignite. This challenge led GM ...