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

General Motors has initiated a pilot program to repair or replace the 9T65 9-speed transmission that is found in a variety of its crossover models. Some owners of vehicles with the 9T65 have reported ...

The two brands have worked together for decades, but they couldn't reach an agreement to extend their longstanding licensing deal.

After more than two decades working together, General Motors and Allison Transmission are officially splitting up.