Understading what PRNDL means and when to use which gear.

If you bought a new car and are confused what the "M" means on or near your gear shift, don't worry. Here's what is, what it ...

There are different arguments that can be made both for and against automatic and manual vehicle transmissions. Manual transmissions offer more nuanced control and an opportunity to better optimize ...

A number of GM Authority readers recently reached out with an identical question regarding this widely used nine-speed automatic transmission: when does it actually shift into ninth gear? These ...

Engineers are just wizards with college degrees. No, I take that back, they're powers are stronger than mere magic. I don't care what spells Harry Potter knows; nothing in his wizarding world is as ...