The current Automotive Engineering Magazine (SAE's monthly magazine) has an article on the CTS. In the article, it states that the CTS is on GM's Global RWD platform.

I thought that Global RWD = Zeta.

But, I also thought that the 08 CTS was a revised Sigma?

Can someone clarify?

Thanks,

 

The CTS is on Sigma.

 

Sigma II

 

Six Sigma.

 

Sigma is mid sized global RWD.. Zeta is full sized global RWD