The Hydra-Matic 8L90 (production code M5U) is a fuel-saving and electronically controlled eight-speed automatic transmission developed and produced by General Motors for use in rear- and rear-biased ...

We first heard rumors that General Motors was developing an all-new eight-speed automatic transmission in-house years ago, and at the North American International Auto Show in January, we learned that ...

Originally developed for the 2015 Corvette Z06, GM’s Hydra-Matic 8L90 eight-speed auto trickled to the normal 2015 Corvette and the 2015 Cadillac Escalade. Designed to be mated exclusively to the 6.2 ...

But rest assured it is coming...Almost no matter how awesome a new product is that GM releases, we ask "what's next" almost immediately. When Chevrolet unveiled the 2015 Corvette Z06, everyone ...