The No.1 US automaker has admitted to further problems surrounding its mishandling of the deadly ignition switch issue in a filing sent to the US safety regulators.
Back in February, the automaker triggered a recall of 2.6 million cars equipped with defective ignition switches, which subsequently led to the largest safety campaign in the automotive history.
Now, GM admitted to have done changes to the switch back in 2003 and 2005 – a redesign that affected four models – but omitted to make sure the older parts, that were prone to failure, were not used anymore. Since then, GM models brought in for repairs were actually serviced with the potentially faulty parts.
According to a GM spokesman, the four models – older Chevrolet Malibu, Pontiac Grand Prix and Grand Am, and Oldsmobile Alero – were not involved in any crashes, injuries or deaths so far.
General Motors recalled this year close to 30 million cars, effectively across all its line-up, as well as many older models. Also, around 14.7 million units are closely linked to the ignition switch problem. The faulty part can trigger an engine shutdown while driving, cutting power to essential safety systems, such as the airbags, power steering and power brakes.