Keeping tabs on your transmission’s vitals has always been tough, because unlike your engine, most trucks do not have a transmission fluid temp gauge, or even an idiot light. And if you are like us ...

Next year, heavy-duty GM trucks will lose their Allison badges, even though the transmissions themselves won't change.

What do you get when you add one part exhaust, one part air intake, and one part programmer to a brand-new Chevy truck? You get better mileage, more power, and a truck that will walk away from your ...

Rear-wheel lockup shouldn’t happen at highway speeds, yet GM’s transmission defect makes exactly that possible. The automaker has recalled 461,839 diesel trucks and SUVs from 2020-2022-including ...

General Motors announced a $332 million investment into new powertrains today, including an eight-speed transmission slated for some of its vehicles by 2016. Also part of the announcement is a new V6 ...