The platform – to be called the Omega, according to a report on Car and Driver in the US – will replace the aging Sigma platform that has been the basis for several models in the Cadillac range.
The report says while the Omega will underpin a replacement for the current Cadillac XTS and other future large cars, it will include aspects of GM’s smaller Alpha platform to aim for production savings.
However it looks unlikely to get anywhere near a Commodore nameplate in the future.
Holden is already working on the next iteration of the large rear-wheel Zeta platform, Zeta II, that will be used for the next-generation Commodore and possibly elsewhere in the GM world – with the most likely overseas jobs to be for Chevrolet in the US and GM brands in China.