Three years ago, the rumor mill was churning indicating GM would use a stripped down version of the Cadillac Sigma (called either sigma-lite or sigma-mass) rear-wheel drive platform (CTS ...

Called Sigma, the platform was exclusive to Cadillac and could accommodate V6 and V8 engines of various sizes. The first model introduced on Sigma was the first-gen CTS in 2003, and the second was ...

Cadillac has been on such a roll with its V-Series and Blackwing cars that it seems strange to imagine a time before a high-powered, handling-oriented V-8 Cadillac. The world-beating performance of ...